Google Lodging Format Protocol Buffer

AI-generated Key Takeaways

• The document defines a Lodging message structure for representing factual information about a property providing accommodations.

• The Lodging message includes fields for property details, services, policies, food and drink, pools, wellness, activities, transportation, families, connectivity, business, accessibility, pets, parking, housekeeping, health and safety, sustainability, and guest unit information.

• Guest unit types can be described with details on occupancy, attributes, living area features, and accessibility.

• Sustainability information includes details on energy efficiency, water conservation, waste reduction, sustainable sourcing, and various sustainability certifications.

• The structure allows for specifying exceptions to standard boolean or integer fields when information cannot be simply represented.

// LINT: LEGACY_NAMES
// This proto relies on set vs. unset primitive-typed fields.
edition = "2023";

package hotels.knowledge_base.external;

option features.field_presence = IMPLICIT;
option java_package = "com.google.travel.hotels.content.knowledge.base.schema.external";
option java_multiple_files = true;

// LodgingList is a wrapper message to store multiple Lodging instances.
message LodgingList {
  repeated Lodging lodgings = 1;
}

// Lodging represents factual information for a single property that provides
// accomodations.
message Lodging {
  // REQUIRED.
  Metadata metadata = 1;

  // REQUIRED. Unique identifier for the property.
  // Either the Place ID (https://developers.google.com/places/place-id)
  // which uniquely identifies a place in the Google Places database and on
  // Google Maps, or, the listing Hotel ID from your hotel list feed.
  string place_id = 6;
  Property property = 12;
  Services services = 13;
  Policies policies = 14;
  FoodAndDrink food_and_drink = 15;
  Pools pools = 16;
  Wellness wellness = 17;
  PublicBath public_bath = 29;
  Activities activities = 18;
  Transportation transportation = 19;
  Families families = 20;
  Connectivity connectivity = 21;
  Business business = 22;
  Accessibility accessibility = 23;
  Pets pets = 24;
  Parking parking = 25;
  Housekeeping housekeeping = 26;
  HealthAndSafety health_and_safety = 27;
  Sustainability sustainability = 28;

  // Living area features that are shared amongst guests,
  // such as shared bathrooms, kitchen areas, grills, etc.
  LivingArea common_living_area = 100;

  // All units on the property have at least these attributes.
  // E.g., a living area size means all units are at least that big.
  GuestUnitType all_units = 101;

  // Some units have as much as these attributes.
  // E.g., a living area size means it is possible to book a unit that big.
  GuestUnitType some_units = 102;

  // Individual GuestUnitTypes that are available in this Lodging.
  repeated GuestUnitType guest_units = 104;
}

/////////////////////////////
// Property level messages //
/////////////////////////////

message Property {
  // Built year.
  oneof built_year_oneof {
    int32 built_year = 2;
    Exception built_year_exception = 3;
  }

  // Last renovated year.
  oneof last_renovated_year_oneof {
    int32 last_renovated_year = 4;
    Exception last_renovated_year_exception = 5;
  }

  // Number of rooms.
  oneof number_of_rooms_oneof {
    int32 number_of_rooms = 6;
    Exception number_of_rooms_exception = 7;
  }

  // Floors.
  oneof floors_oneof {
    int32 floors = 8;
    Exception floors_exception = 9;
  }
}

message Services {
  // Class rating.
  oneof class_rating_oneof {
    // Class rating from 1.0 to 5.0.
    float class_rating = 2;
    Exception class_rating_exception = 3;
  }

  ///////////////////////
  // Reception and lobby.

  // Front desk.
  oneof front_desk_oneof {
    bool front_desk = 4;
    Exception front_desk_exception = 5;
  }

  // Front desk 24hrs.
  oneof front_desk_24hrs_oneof {
    bool front_desk_24hrs = 6;
    Exception front_desk_24hrs_exception = 7;
  }

  // Concierge.
  oneof concierge_oneof {
    bool concierge = 8;
    Exception concierge_exception = 9;
  }

  // Elevator.
  oneof elevator_oneof {
    bool elevator = 43;
    Exception elevator_exception = 44;
  }

  ////////////////
  // Conveniences.

  // Baggage storage.
  oneof baggage_storage_oneof {
    bool baggage_storage = 16;
    Exception baggage_storage_exception = 17;
  }

  // Laundry full service.
  oneof laundry_full_service_oneof {
    bool laundry_full_service = 18;
    Exception laundry_full_service_exception = 19;
  }

  // Laundry self service.
  oneof laundry_self_service_oneof {
    bool laundry_self_service = 20;
    Exception laundry_self_service_exception = 21;
  }

  // Social hour.
  oneof social_hour_oneof {
    bool social_hour = 22;
    Exception social_hour_exception = 23;
  }

  // Wake up calls.
  oneof wake_up_calls_oneof {
    bool wake_up_calls = 24;
    Exception wake_up_calls_exception = 25;
  }

  // Convenience store.
  oneof convenience_store_oneof {
    bool convenience_store = 26;
    Exception convenience_store_exception = 27;
  }

  // Gift shop.
  oneof gift_shop_oneof {
    bool gift_shop = 28;
    Exception gift_shop_exception = 29;
  }

  // Currency exchange.
  oneof currency_exchange_oneof {
    bool currency_exchange = 30;
    Exception currency_exchange_exception = 31;
  }

  LanguagesSpoken languages_spoken = 42;
}

message LanguagesSpoken {
  // Arabic spoken.
  oneof arabic_spoken_oneof {
    bool arabic_spoken = 1;
    Exception arabic_spoken_exception = 2;
  }

  // Cantonese spoken.
  oneof cantonese_spoken_oneof {
    bool cantonese_spoken = 3;
    Exception cantonese_spoken_exception = 4;
  }

  // Dutch spoken.
  oneof dutch_spoken_oneof {
    bool dutch_spoken = 5;
    Exception dutch_spoken_exception = 6;
  }

  // English spoken.
  oneof english_spoken_oneof {
    bool english_spoken = 7;
    Exception english_spoken_exception = 8;
  }

  // Filipino spoken.
  oneof filipino_spoken_oneof {
    bool filipino_spoken = 9;
    Exception filipino_spoken_exception = 10;
  }

  // French spoken.
  oneof french_spoken_oneof {
    bool french_spoken = 11;
    Exception french_spoken_exception = 12;
  }

  // German spoken.
  oneof german_spoken_oneof {
    bool german_spoken = 13;
    Exception german_spoken_exception = 14;
  }

  // Hindi spoken.
  oneof hindi_spoken_oneof {
    bool hindi_spoken = 15;
    Exception hindi_spoken_exception = 16;
  }

  // Indonesian spoken.
  oneof indonesian_spoken_oneof {
    bool indonesian_spoken = 17;
    Exception indonesian_spoken_exception = 18;
  }

  // Italian spoken.
  oneof italian_spoken_oneof {
    bool italian_spoken = 31;
    Exception italian_spoken_exception = 32;
  }

  // Japanese spoken.
  oneof japanese_spoken_oneof {
    bool japanese_spoken = 35;
    Exception japanese_spoken_exception = 36;
  }

  // Korean spoken.
  oneof korean_spoken_oneof {
    bool korean_spoken = 19;
    Exception korean_spoken_exception = 20;
  }

  // Mandarin spoken.
  oneof mandarin_spoken_oneof {
    bool mandarin_spoken = 21;
    Exception mandarin_spoken_exception = 22;
  }

  // Portuguese spoken.
  oneof portuguese_spoken_oneof {
    bool portuguese_spoken = 23;
    Exception portuguese_spoken_exception = 24;
  }

  // Russian spoken.
  oneof russian_spoken_oneof {
    bool russian_spoken = 33;
    Exception russian_spoken_exception = 34;
  }

  // Spanish spoken.
  oneof spanish_spoken_oneof {
    bool spanish_spoken = 25;
    Exception spanish_spoken_exception = 26;
  }

  // Vietnamese spoken.
  oneof vietnamese_spoken_oneof {
    bool vietnamese_spoken = 27;
    Exception vietnamese_spoken_exception = 28;
  }
}

message Housekeeping {
  // Housekeeping available.
  oneof housekeeping_available_oneof {
    bool housekeeping_available = 2;
    Exception housekeeping_available_exception = 3;
  }

  // Housekeeping daily.
  oneof housekeeping_daily_oneof {
    bool housekeeping_daily = 4;
    Exception housekeeping_daily_exception = 5;
  }

  // Turndown service.
  oneof turndown_service_oneof {
    bool turndown_service = 6;
    Exception turndown_service_exception = 7;
  }
}

message Parking {
  // Parking available.
  oneof parking_available_oneof {
    bool parking_available = 2;
    Exception parking_available_exception = 3;
  }

  // Parking for free.
  oneof parking_for_free_oneof {
    bool parking_for_free = 4;
    Exception parking_for_free_exception = 5;
  }

  // Self parking available.
  oneof self_parking_available_oneof {
    bool self_parking_available = 6;
    Exception self_parking_available_exception = 7;
  }

  // Self parking for free.
  oneof self_parking_for_free_oneof {
    bool self_parking_for_free = 8;
    Exception self_parking_for_free_exception = 9;
  }

  // Valet parking available.
  oneof valet_parking_available_oneof {
    bool valet_parking_available = 10;
    Exception valet_parking_available_exception = 11;
  }

  // Valet parking for free.
  oneof valet_parking_for_free_oneof {
    bool valet_parking_for_free = 12;
    Exception valet_parking_for_free_exception = 13;
  }

  // Electric car charging stations.
  oneof electric_car_charging_stations_oneof {
    bool electric_car_charging_stations = 14;
    Exception electric_car_charging_stations_exception = 15;
  }
}

message Policies {
  // Check in time.
  oneof check_in_time_oneof {
    // 24hr clock, e.g. "1500" or "1600", in hotel local time.
    // This is the ISO 8601 dense time format with minute precision.
    // For normalization, extended format (with colons) is not supported.
    string check_in_time = 4;
    Exception check_in_time_exception = 5;
  }

  // Check out time.
  oneof check_out_time_oneof {
    // 24hr clock, e.g. "1130" or "1200", in hotel local time.
    // This is the ISO 8601 dense time format with minute precision.
    // For normalization, extended format (with colons) is not supported.
    string check_out_time = 6;
    Exception check_out_time_exception = 7;
  }

  // Kids stay for free.
  oneof kids_stay_for_free_oneof {
    bool kids_stay_for_free = 24;
    Exception kids_stay_for_free_exception = 25;
  }

  // Max number of kids stay for free.
  oneof max_number_of_kids_stay_for_free_oneof {
    int32 max_number_of_kids_stay_for_free = 26;
    Exception max_number_of_kids_stay_for_free_exception = 27;
  }

  // Max child age.
  oneof max_child_age_oneof {
    int32 max_child_age = 28;
    Exception max_child_age_exception = 29;
  }

  // Smoke free property.
  oneof smoke_free_property_oneof {
    bool smoke_free_property = 30;
    Exception smoke_free_property_exception = 31;
  }

  // All inclusive rates available.
  oneof all_inclusive_available_oneof {
    bool all_inclusive_available = 32;
    Exception all_inclusive_available_exception = 33;
  }

  // All inclusive rates only.
  oneof all_inclusive_only_oneof {
    bool all_inclusive_only = 34;
    Exception all_inclusive_only_exception = 35;
  }

  PaymentOptions payment_options = 36;
}

message PaymentOptions {
  // Pay cash.
  oneof cash_oneof {
    bool cash = 2;
    Exception cash_exception = 3;
  }

  // Pay by cheque.
  oneof cheque_oneof {
    bool cheque = 4;
    Exception cheque_exception = 5;
  }

  // Pay credit card.
  oneof credit_card_oneof {
    bool credit_card = 6;
    Exception credit_card_exception = 7;
  }

  // Pay debit card.
  oneof debit_card_oneof {
    bool debit_card = 8;
    Exception debit_card_exception = 9;
  }

  // Pay mobile nfc.
  oneof mobile_nfc_oneof {
    bool mobile_nfc = 10;
    Exception mobile_nfc_exception = 11;
  }
}

message FoodAndDrink {
  // Room service.
  oneof room_service_oneof {
    bool room_service = 2;
    Exception room_service_exception = 3;
  }

  // Room service 24hrs.
  oneof room_service_24hrs_oneof {
    bool room_service_24hrs = 4;
    Exception room_service_24hrs_exception = 5;
  }

  // Existence of restaurant.
  oneof restaurant_oneof {
    bool restaurant = 24;
    Exception restaurant_exception = 25;
  }

  // Number of restaurants.
  oneof number_of_restaurants_oneof {
    int32 number_of_restaurants = 6;
    Exception number_of_restaurants_exception = 7;
  }

  // Table service.
  oneof table_service_oneof {
    bool table_service = 8;
    Exception table_service_exception = 9;
  }

  // Buffet.
  oneof buffet_oneof {
    bool buffet = 10;
    Exception buffet_exception = 11;
  }

  // Buffet dinner.
  oneof buffet_dinner_oneof {
    bool buffet_dinner = 12;
    Exception buffet_dinner_exception = 13;
  }

  // Buffet breakfast.
  oneof buffet_breakfast_oneof {
    bool buffet_breakfast = 14;
    Exception buffet_breakfast_exception = 15;
  }

  // Breakfast available.
  oneof breakfast_available_oneof {
    bool breakfast_available = 22;
    Exception breakfast_available_exception = 23;
  }

  // Breakfast for free.
  oneof breakfast_for_free_oneof {
    bool breakfast_for_free = 16;
    Exception breakfast_for_free_exception = 17;
  }

  // Bar.
  oneof bar_oneof {
    bool bar = 18;
    Exception bar_exception = 19;
  }

  // Vending machine.
  oneof vending_machine_oneof {
    bool vending_machine = 20;
    Exception vending_machine_exception = 21;
  }
}

message Pools {
  // Existence of pool.
  oneof pool_oneof {
    bool pool = 2;
    Exception pool_exception = 3;
  }

  // Number of pools.
  oneof number_of_pools_oneof {
    // Min count of all pools on property.
    int32 number_of_pools = 4;
    Exception number_of_pools_exception = 5;
  }

  // Existence of indoor pool.
  oneof indoor_pool_oneof {
    // Including hot tubs, adult pools, etc.
    bool indoor_pool = 30;
    Exception indoor_pool_exception = 31;
  }

  // Number of indoor pools.
  oneof number_of_indoor_pools_oneof {
    // Including hot tubs, adult pools, etc.
    int32 number_of_indoor_pools = 6;
    Exception number_of_indoor_pools_exception = 7;
  }

  // Existence of outdoor pool.
  oneof outdoor_pool_oneof {
    // Including hot tubs, lazy rivers, etc.
    bool outdoor_pool = 32;
    Exception outdoor_pool_exception = 33;
  }

  // Number of outdoor pools.
  oneof number_of_outdoor_pools_oneof {
    // Including hot tubs, lazy rivers, etc.
    int32 number_of_outdoor_pools = 8;
    Exception number_of_outdoor_pools_exception = 9;
  }

  // Hot tub.
  oneof hot_tub_oneof {
    bool hot_tub = 12;
    Exception hot_tub_exception = 13;
  }

  // Waterslide.
  oneof waterslide_oneof {
    bool waterslide = 14;
    Exception waterslide_exception = 15;
  }

  // Lazy river.
  oneof lazy_river_oneof {
    bool lazy_river = 16;
    Exception lazy_river_exception = 17;
  }

  // Adult pool.
  oneof adult_pool_oneof {
    bool adult_pool = 18;
    Exception adult_pool_exception = 19;
  }

  // Wading pool.
  oneof wading_pool_oneof {
    bool wading_pool = 20;
    Exception wading_pool_exception = 21;
  }

  // Wave pool.
  oneof wave_pool_oneof {
    bool wave_pool = 22;
    Exception wave_pool_exception = 23;
  }

  // Thermal pool.
  oneof thermal_pool_oneof {
    // Includes hot springs.
    bool thermal_pool = 24;
    Exception thermal_pool_exception = 25;
  }

  // Water park.
  oneof water_park_oneof {
    bool water_park = 26;
    Exception water_park_exception = 27;
  }

  // Lifeguard.
  oneof lifeguard_oneof {
    bool lifeguard = 28;
    Exception lifeguard_exception = 29;
  }
}

message Wellness {
  // Fitness center.
  oneof fitness_center_oneof {
    bool fitness_center = 4;
    Exception fitness_center_exception = 5;
  }

  // Fitness center for free.
  oneof fitness_center_for_free_oneof {
    bool fitness_center_for_free = 24;
    Exception fitness_center_for_free_exception = 25;
  }

  // Elliptical machine.
  oneof elliptical_machine_oneof {
    bool elliptical_machine = 6;
    Exception elliptical_machine_exception = 7;
  }

  // Treadmill.
  oneof treadmill_oneof {
    bool treadmill = 8;
    Exception treadmill_exception = 9;
  }

  // Weight machine.
  oneof weight_machine_oneof {
    bool weight_machine = 10;
    Exception weight_machine_exception = 11;
  }

  // Free weights.
  oneof free_weights_oneof {
    bool free_weights = 12;
    Exception free_weights_exception = 13;
  }

  // Spa.
  oneof spa_oneof {
    bool spa = 14;
    Exception spa_exception = 15;
  }

  // Salon.
  oneof salon_oneof {
    bool salon = 16;
    Exception salon_exception = 17;
  }

  // Sauna.
  oneof sauna_oneof {
    bool sauna = 18;
    Exception sauna_exception = 19;
  }

  // Massage.
  oneof massage_oneof {
    bool massage = 20;
    Exception massage_exception = 21;
  }

  // Aesthetic salon.
  oneof aesthetic_salon_oneof {
    bool aesthetic_salon = 30;
    Exception aesthetic_salon_exception = 31;
  }

  //////////////
  // Healthcare.

  // Doctor on call.
  oneof doctor_on_call_oneof {
    bool doctor_on_call = 22;
    Exception doctor_on_call_exception = 23;
  }
}

message Activities {
  /////////////////////////
  // On-premise facilities.

  // Game room.
  oneof game_room_oneof {
    bool game_room = 2;
    Exception game_room_exception = 3;
  }

  // Nightclub.
  oneof nightclub_oneof {
    bool nightclub = 4;
    Exception nightclub_exception = 5;
  }

  // Casino.
  oneof casino_oneof {
    bool casino = 6;
    Exception casino_exception = 7;
  }

  // Boutique stores.
  oneof boutique_stores_oneof {
    bool boutique_stores = 8;
    Exception boutique_stores_exception = 9;
  }

  ////////////////////////////////////////////////////////////////
  // On-premise or adjacent sports facilities, possibly for a fee.

  // Tennis.
  oneof tennis_oneof {
    bool tennis = 10;
    Exception tennis_exception = 11;
  }

  // Golf.
  oneof golf_oneof {
    bool golf = 12;
    Exception golf_exception = 13;
  }

  // Horseback riding.
  oneof horseback_riding_oneof {
    bool horseback_riding = 14;
    Exception horseback_riding_exception = 15;
  }

  // Snorkeling.
  oneof snorkeling_oneof {
    bool snorkeling = 16;
    Exception snorkeling_exception = 17;
  }

  // Scuba.
  oneof scuba_oneof {
    bool scuba = 18;
    Exception scuba_exception = 19;
  }

  // Water skiing.
  oneof water_skiing_oneof {
    bool water_skiing = 20;
    Exception water_skiing_exception = 21;
  }

  // Bicycles rental.
  oneof bicycles_rental_oneof {
    bool bicycles_rental = 22;
    Exception bicycles_rental_exception = 23;
  }

  // Bicycles rental for free.
  oneof bicycles_rental_for_free_oneof {
    bool bicycles_rental_for_free = 24;
    Exception bicycles_rental_for_free_exception = 25;
  }

  // Watercraft rental.
  oneof watercraft_rental_oneof {
    bool watercraft_rental = 26;
    Exception watercraft_rental_exception = 27;
  }

  // Watercraft rental for free.
  oneof watercraft_rental_for_free_oneof {
    bool watercraft_rental_for_free = 28;
    Exception watercraft_rental_for_free_exception = 29;
  }

  // The property is directly accessible to a beach without users needing to
  // cross a public road.
  oneof beach_access_oneof {
    bool beach_access = 30;
    Exception beach_access_exception = 31;
  }

  // The property has a private beach that's only accessible by guests staying
  // at the property.
  oneof private_beach_oneof {
    bool private_beach = 32;
    Exception private_beach_exception = 33;
  }

  // The property is directly on the beach.
  oneof beach_front_oneof {
    bool beach_front = 34;
    Exception beach_front_exception = 35;
  }

  // Karaoke.
  oneof karaoke_oneof {
    bool karaoke = 36;
    Exception karaoke_exception = 37;
  }

  // Banquet hall.
  oneof banquet_hall_oneof {
    bool banquet_hall = 38;
    Exception banquet_hall_exception = 39;
  }

  // Table tennis.
  oneof table_tennis_oneof {
    bool table_tennis = 40;
    Exception table_tennis_exception = 41;
  }
}

message Transportation {
  // Transfer from/to lodging property.
  oneof transfer_oneof {
    bool transfer = 2;
    Exception transfer_exception = 3;
  }

  // Airport shuttle.
  oneof airport_shuttle_oneof {
    bool airport_shuttle = 4;
    Exception airport_shuttle_exception = 5;
  }

  // Airport shuttle for free.
  oneof airport_shuttle_for_free_oneof {
    bool airport_shuttle_for_free = 6;
    Exception airport_shuttle_for_free_exception = 7;
  }

  // Local shuttle.
  oneof local_shuttle_oneof {
    // Shuttle to local attractions and businesses.
    bool local_shuttle = 8;
    Exception local_shuttle_exception = 9;
  }

  // Car rental on property.
  oneof car_rental_on_property_oneof {
    bool car_rental_on_property = 10;
    Exception car_rental_on_property_exception = 11;
  }

  // Private car service.
  oneof private_car_service_oneof {
    // Private car services refers to taxis or black car as long as the car is
    // not shared.
    bool private_car_service = 12;
    Exception private_car_service_exception = 13;
  }

  // Private car service for free.
  oneof private_car_service_for_free_oneof {
    bool private_car_service_for_free = 14;
    Exception private_car_service_for_free_exception = 15;
  }
}

message Families {
  // Babysitting.
  oneof babysitting_oneof {
    bool babysitting = 4;
    Exception babysitting_exception = 5;
  }

  // Kids activities.
  oneof kids_activities_oneof {
    bool kids_activities = 6;
    Exception kids_activities_exception = 7;
  }

  // Kids club.
  oneof kids_club_oneof {
    bool kids_club = 8;
    Exception kids_club_exception = 9;
  }

  // Kids friendly.
  oneof kids_friendly_oneof {
    bool kids_friendly = 16;
    Exception kids_friendly_exception = 17;
  }
}

message Connectivity {
  // Internet and WiFi options.

  // Wifi available.
  oneof wifi_available_oneof {
    bool wifi_available = 2;
    Exception wifi_available_exception = 3;
  }

  // Wifi for free.
  oneof wifi_for_free_oneof {
    bool wifi_for_free = 22;
    Exception wifi_for_free_exception = 23;
  }

  // Wifi in public areas.
  oneof wifi_in_public_areas_oneof {
    bool wifi_in_public_areas = 6;
    Exception wifi_in_public_areas_exception = 7;
  }

  // Public internet terminal.
  oneof public_internet_terminal_oneof {
    bool public_internet_terminal = 12;
    Exception public_internet_terminal_exception = 13;
  }
}

message Business {
  // Business center.
  oneof business_center_oneof {
    bool business_center = 2;
    Exception business_center_exception = 3;
  }

  // Meeting rooms.
  oneof meeting_rooms_oneof {
    bool meeting_rooms = 6;
    Exception meeting_rooms_exception = 7;
  }

  // Meeting room count.
  oneof number_of_meeting_rooms_oneof {
    int32 number_of_meeting_rooms = 8;
    Exception number_of_meeting_rooms_exception = 9;
  }
}

message Accessibility {
  // Mobility accessible.
  oneof mobility_accessible_oneof {
    bool mobility_accessible = 4;
    Exception mobility_accessible_exception = 5;
  }

  // Mobility accessible parking.
  oneof mobility_accessible_parking_oneof {
    bool mobility_accessible_parking = 2;
    Exception mobility_accessible_parking_exception = 3;
  }

  // Mobility accessible elevator.
  oneof mobility_accessible_elevator_oneof {
    bool mobility_accessible_elevator = 6;
    Exception mobility_accessible_elevator_exception = 7;
  }

  // Mobility accessible pool.
  oneof mobility_accessible_pool_oneof {
    bool mobility_accessible_pool = 8;
    Exception mobility_accessible_pool_exception = 9;
  }

  // Rental wheelchair.
  oneof wheelchair_rental_oneof {
    bool wheelchair_rental = 10;
    Exception wheelchair_rental_exception = 11;
  }
}

message Pets {
  // Pets allowed.
  oneof pets_allowed_oneof {
    bool pets_allowed = 2;
    Exception pets_allowed_exception = 3;
  }

  // Pets allowed for free.
  oneof pets_allowed_for_free_oneof {
    // No standard fees apply for having an allowed pet in the guest unit.
    bool pets_allowed_for_free = 4;
    Exception pets_allowed_for_free_exception = 5;
  }

  // Dogs allowed.
  oneof dogs_allowed_oneof {
    bool dogs_allowed = 6;
    Exception dogs_allowed_exception = 7;
  }

  // Cats allowed.
  oneof cats_allowed_oneof {
    bool cats_allowed = 8;
    Exception cats_allowed_exception = 9;
  }
}

message PublicBath {
  // Onsen.
  oneof onsen_oneof {
    bool onsen = 2;
    Exception onsen_exception = 3;
  }

  // Natural onsen.
  oneof natural_onsen_oneof {
    bool natural_onsen = 4;
    Exception natural_onsen_exception = 5;
  }

  // Artificial onsen.
  oneof artificial_onsen_oneof {
    bool artificial_onsen = 6;
    Exception artificial_onsen_exception = 7;
  }

  // Public bath.
  oneof public_bath_oneof {
    bool public_bath = 8;
    Exception public_bath_exception = 9;
  }

  // Open-air bath.
  oneof open_air_bath_oneof {
    bool open_air_bath = 10;
    Exception open_air_bath_exception = 11;
  }

  // Private Bath.
  oneof private_bath_oneof {
    bool private_bath = 12;
    Exception private_bath_exception = 13;
  }

  // Jacuzzi.
  oneof jacuzzi_oneof {
    bool jacuzzi = 14;
    Exception jacuzzi_exception = 15;
  }

  // Water bath.
  oneof water_bath_oneof {
    bool water_bath = 16;
    Exception water_bath_exception = 17;
  }

  // Bedrock bath.
  oneof bedrock_bath_oneof {
    bool bedrock_bath = 18;
    Exception bedrock_bath_exception = 19;
  }

  // Mixed bathing.
  oneof mixed_bathing_oneof {
    bool mixed_bathing = 20;
    Exception mixed_bathing_exception = 21;
  }
}

///////////////////////////////
// Guest Unit level messages //
///////////////////////////////

message GuestUnitType {
  // REQUIRED. Unit or room code identifiers for a single GuestUnitType. Each
  // code must be unique within a Lodging instance.
  repeated string code = 59;

  // REQUIRED. Short name of the GuestUnitType. Target <50 chars for English
  // version.
  string name = 2;

  // Tier.
  oneof tier_oneof {
    // Standard or deluxe.
    // A non-standard tier is only permitted if at least one other unit
    // type is of a lower tier.
    UnitTier tier = 5;
    Exception tier_exception = 6;
  }

  /////////////
  // Occupancy.

  // Max number of occupants.
  oneof max_number_of_occupants_oneof {
    int32 max_number_of_occupants = 7;
    Exception max_number_of_occupants_exception = 8;
  }

  // Max number of adult occupants.
  oneof max_number_of_adult_occupants_oneof {
    int32 max_number_of_adult_occupants = 9;
    Exception max_number_of_adult_occupants_exception = 10;
  }

  // Max number of child occupants.
  oneof max_number_of_child_occupants_oneof {
    int32 max_number_of_child_occupants = 11;
    Exception max_number_of_child_occupants_exception = 12;
  }

  /////////////////////////
  // Guest unit attributes.
  // Where possible features should be defined in GuestUnitFeatures and
  // assigned at the most precise known granularity, e.g. some/all guest
  // units, vs. a specific guest unit type vs. a living area.

  // Private home.
  oneof private_home_oneof {
    bool private_home = 13;
    Exception private_home_exception = 14;
  }

  // Suite with multiple living areas / bedrooms.
  oneof suite_oneof {
    bool suite = 19;
    Exception suite_exception = 20;
  }

  // Bungalow or villa.
  oneof bungalow_or_villa_oneof {
    bool bungalow_or_villa = 21;
    Exception bungalow_or_villa_exception = 22;
  }

  // Access to executive floor lounge or related benefits.
  oneof executive_floor_oneof {
    bool executive_floor = 23;
    Exception executive_floor_exception = 24;
  }

  // Connecting unit available.
  oneof connecting_unit_available_oneof {
    bool connecting_unit_available = 25;
    Exception connecting_unit_available_exception = 26;
  }

  ViewsFromUnit views = 60;

  ////////////////
  // Living areas.

  // Features that cannot be associated with a particular
  // living area but are available in the guest unit type.
  // Prefer to associate with living areas when possible.
  // In general, summable numbers are summarized by taking
  // the max of (the value stored in this field) and
  // (the sum of the values for the individual living areas).
  LivingArea total_living_areas = 100;
}

enum UnitTier {
  // Standard. The basic tier for this kind of unit.
  DEFAULT_STANDARD = 0;

  // Deluxe or Superior. Only allowed if another unit type is a standard tier.
  DELUXE = 1;
}

//////////////////////////////////////////////
// Views available from the guest unit itself.
message ViewsFromUnit {
  // View of beach.
  oneof view_of_beach_oneof {
    bool view_of_beach = 2;
    Exception view_of_beach_exception = 3;
  }

  // View of city.
  oneof view_of_city_oneof {
    bool view_of_city = 4;
    Exception view_of_city_exception = 5;
  }

  // View of garden.
  oneof view_of_garden_oneof {
    bool view_of_garden = 6;
    Exception view_of_garden_exception = 7;
  }

  // View of lake.
  oneof view_of_lake_oneof {
    bool view_of_lake = 8;
    Exception view_of_lake_exception = 9;
  }

  // View of landmark.
  oneof view_of_landmark_oneof {
    bool view_of_landmark = 10;
    Exception view_of_landmark_exception = 11;
  }

  // View of ocean.
  oneof view_of_ocean_oneof {
    bool view_of_ocean = 12;
    Exception view_of_ocean_exception = 13;
  }

  // View of pool.
  oneof view_of_pool_oneof {
    bool view_of_pool = 14;
    Exception view_of_pool_exception = 15;
  }

  // View of valley.
  oneof view_of_valley_oneof {
    bool view_of_valley = 16;
    Exception view_of_valley_exception = 17;
  }
}

// An individual room, such as kitchen, bathroom, bedroom, within
// a bookable guest unit.
message LivingArea {
  LivingAreaLayout layout = 100;
  LivingAreaFeatures features = 101;
  LivingAreaEating eating = 102;
  LivingAreaSleeping sleeping = 103;
  LivingAreaAccessibility accessibility = 104;
}

message LivingAreaLayout {
  // Living area sq meters.
  oneof living_area_sq_meters_oneof {
    float living_area_sq_meters = 2;
    Exception living_area_sq_meters_exception = 3;
  }

  // Stairs inside the LivingArea.
  oneof stairs_oneof {
    bool stairs = 4;
    Exception stairs_exception = 5;
  }

  // Loft.
  oneof loft_oneof {
    bool loft = 6;
    Exception loft_exception = 7;
  }

  // Non smoking.
  oneof non_smoking_oneof {
    bool non_smoking = 12;
    Exception non_smoking_exception = 13;
  }

  // Patio.
  oneof patio_oneof {
    // Has a patio or deck, ground or rooftop.
    bool patio = 16;
    Exception patio_exception = 17;
  }

  // Balcony.
  oneof balcony_oneof {
    // Has a balcony or lanai.
    bool balcony = 18;
    Exception balcony_exception = 19;
  }
}

message LivingAreaFeatures {
  /////////////////////
  // Bathroom features.

  // Private bathroom.
  oneof private_bathroom_oneof {
    // Not shared with other guests.
    bool private_bathroom = 2;
    Exception private_bathroom_exception = 3;
  }

  // Toilet.
  oneof toilet_oneof {
    bool toilet = 4;
    Exception toilet_exception = 5;
  }

  // Bidet.
  oneof bidet_oneof {
    bool bidet = 6;
    Exception bidet_exception = 7;
  }

  // Shower.
  oneof shower_oneof {
    bool shower = 8;
    Exception shower_exception = 9;
  }

  // Bathtub.
  oneof bathtub_oneof {
    bool bathtub = 12;
    Exception bathtub_exception = 13;
  }

  // Hairdryer.
  oneof hairdryer_oneof {
    bool hairdryer = 14;
    Exception hairdryer_exception = 15;
  }

  ///////////////
  // Convenience.

  // Washer.
  oneof washer_oneof {
    bool washer = 64;
    Exception washer_exception = 65;
  }

  // Dryer.
  oneof dryer_oneof {
    bool dryer = 66;
    Exception dryer_exception = 67;
  }

  // Ironing equipment.
  oneof ironing_equipment_oneof {
    bool ironing_equipment = 28;
    Exception ironing_equipment_exception = 29;
  }

  // Universal power adapters.
  oneof universal_power_adapters_oneof {
    bool universal_power_adapters = 30;
    Exception universal_power_adapters_exception = 31;
  }

  ///////////
  // Comfort.

  // Air conditioning.
  oneof air_conditioning_oneof {
    bool air_conditioning = 32;
    Exception air_conditioning_exception = 33;
  }

  // Heating.
  oneof heating_oneof {
    bool heating = 34;
    Exception heating_exception = 35;
  }

  // Fireplace.
  oneof fireplace_oneof {
    bool fireplace = 36;
    Exception fireplace_exception = 37;
  }

  /////////////////
  // Entertainment.

  // TV available.
  oneof tv_oneof {
    bool tv = 38;
    Exception tv_exception = 39;
  }

  // TV with casting.
  oneof tv_with_casting_oneof {
    // Chromecast, Apple TV, etc.
    bool tv_with_casting = 40;
    Exception tv_with_casting_exception = 41;
  }

  // TV with streaming.
  oneof tv_with_streaming_oneof {
    // Built in Netflix, Hulu, etc.
    bool tv_with_streaming = 42;
    Exception tv_with_streaming_exception = 43;
  }

  // Pay per view movies.
  oneof pay_per_view_movies_oneof {
    bool pay_per_view_movies = 44;
    Exception pay_per_view_movies_exception = 45;
  }

  ////////////
  // Security.

  // In unit safe.
  oneof in_unit_safe_oneof {
    bool in_unit_safe = 48;
    Exception in_unit_safe_exception = 49;
  }

  // Electronic room key.
  oneof electronic_room_key_oneof {
    bool electronic_room_key = 50;
    Exception electronic_room_key_exception = 51;
  }

  ///////////////
  // Connectivity

  // In unit Wifi available.
  oneof in_unit_wifi_available_oneof {
    bool in_unit_wifi_available = 62;
    Exception in_unit_wifi_available_exception = 63;
  }
}

message LivingAreaEating {
  // Kitchen available in unit.
  oneof kitchen_available_oneof {
    bool kitchen_available = 2;
    Exception kitchen_available_exception = 3;
  }

  /////////////////////////
  // Major kitchen features.

  // Refrigerator.
  oneof refrigerator_oneof {
    bool refrigerator = 4;
    Exception refrigerator_exception = 5;
  }

  // Dishwasher.
  oneof dishwasher_oneof {
    bool dishwasher = 6;
    Exception dishwasher_exception = 7;
  }

  // Stove.
  oneof stove_oneof {
    bool stove = 8;
    Exception stove_exception = 9;
  }

  // Oven.
  oneof oven_oneof {
    bool oven = 10;
    Exception oven_exception = 11;
  }

  //////////////////////////
  // Minor kitchen features.

  // Cookware.
  oneof cookware_oneof {
    bool cookware = 12;
    Exception cookware_exception = 13;
  }

  // Sink.
  oneof sink_oneof {
    bool sink = 14;
    Exception sink_exception = 15;
  }

  // Microwave.
  oneof microwave_oneof {
    bool microwave = 16;
    Exception microwave_exception = 17;
  }

  // Toaster.
  oneof toaster_oneof {
    bool toaster = 18;
    Exception toaster_exception = 19;
  }

  // Indoor grill.
  oneof indoor_grill_oneof {
    bool indoor_grill = 22;
    Exception indoor_grill_exception = 23;
  }

  // Outdoor grill.
  oneof outdoor_grill_oneof {
    bool outdoor_grill = 24;
    Exception outdoor_grill_exception = 25;
  }

  //////////////////////////////
  // In-unit food and beverages.

  // Minibar.
  oneof minibar_oneof {
    bool minibar = 34;
    Exception minibar_exception = 35;
  }

  // Snackbar.
  oneof snackbar_oneof {
    bool snackbar = 36;
    Exception snackbar_exception = 37;
  }

  // Coffee maker.
  oneof coffee_maker_oneof {
    bool coffee_maker = 42;
    Exception coffee_maker_exception = 43;
  }

  // Kettle.
  oneof kettle_oneof {
    bool kettle = 48;
    Exception kettle_exception = 49;
  }

  // Tea station.
  oneof tea_station_oneof {
    bool tea_station = 50;
    Exception tea_station_exception = 51;
  }
}

message LivingAreaSleeping {
  ////////////////////
  // Bed types counts.

  // Number of beds.
  oneof number_of_beds_oneof {
    int32 number_of_beds = 2;
    Exception number_of_beds_exception = 3;
  }

  // King beds.
  oneof king_beds_oneof {
    // Including California king and super king.
    int32 king_beds = 4;
    Exception king_beds_exception = 5;
  }

  // Queen beds.
  oneof queen_beds_oneof {
    int32 queen_beds = 6;
    Exception queen_beds_exception = 7;
  }

  // Double beds.
  oneof double_beds_oneof {
    int32 double_beds = 8;
    Exception double_beds_exception = 9;
  }

  // Single or twin beds.
  oneof single_or_twin_beds_oneof {
    int32 single_or_twin_beds = 10;
    Exception single_or_twin_beds_exception = 11;
  }

  // Sofa beds.
  oneof sofa_beds_oneof {
    int32 sofa_beds = 14;
    Exception sofa_beds_exception = 15;
  }

  // Bunk beds.
  oneof bunk_beds_oneof {
    int32 bunk_beds = 16;
    Exception bunk_beds_exception = 17;
  }

  // Other beds.
  oneof other_beds_oneof {
    // Tatami, trundle, etc.
    int32 other_beds = 18;
    Exception other_beds_exception = 19;
  }

  // Roll away beds available.
  // This field is deprecated. Please use field roll_away_bed_count for the
  // number of roll away beds. Otherwise, just use field roll_away_beds for the
  // existence of roll away beds.
  oneof roll_away_beds_available_oneof {
    int32 roll_away_beds_available = 20 [deprecated = true];

    Exception roll_away_beds_available_exception = 21 [deprecated = true];
  }

  // Roll away beds.
  oneof roll_away_beds_oneof {
    bool roll_away_beds = 40;
    Exception roll_away_beds_exception = 41;
  }

  // Roll away bed count.
  oneof roll_away_bed_count_oneof {
    int32 roll_away_bed_count = 42;
    Exception roll_away_bed_count_exception = 43;
  }

  // Cribs available.
  // This field is deprecated. Please use field crib_count for the number of
  // cribs. Otherwise, just use field cribs for the existence of cribs.
  oneof cribs_available_oneof {
    int32 cribs_available = 22 [deprecated = true];

    Exception cribs_available_exception = 23 [deprecated = true];
  }

  // Cribs.
  oneof cribs_oneof {
    bool cribs = 44;
    Exception cribs_exception = 45;
  }

  // Crib count.
  oneof crib_count_oneof {
    int32 crib_count = 46;
    Exception crib_count_exception = 47;
  }

  ////////////
  // Sleeping.

  // Hypoallergenic bedding.
  oneof hypoallergenic_bedding_oneof {
    bool hypoallergenic_bedding = 28;
    Exception hypoallergenic_bedding_exception = 29;
  }

  // Synthetic pillows.
  oneof synthetic_pillows_oneof {
    bool synthetic_pillows = 32;
    Exception synthetic_pillows_exception = 33;
  }

  // Memory foam pillows available.
  oneof memory_foam_pillows_oneof {
    bool memory_foam_pillows = 34;
    Exception memory_foam_pillows_exception = 35;
  }

  // Feather pillows available.
  oneof feather_pillows_oneof {
    bool feather_pillows = 36;
    Exception feather_pillows_exception = 37;
  }
}

message LivingAreaAccessibility {
  // Mobility-accessible unit. Generally what "accessible room" refers to in
  // public lodging offerings.
  oneof mobility_accessible_unit_oneof {
    // True if ada_compliant_unit.
    bool mobility_accessible_unit = 2;
    Exception mobility_accessible_unit_exception = 3;
  }

  // ADA standards compliant unit.
  oneof ada_compliant_unit_oneof {
    bool ada_compliant_unit = 4;
    Exception ada_compliant_unit_exception = 5;
  }

  // Hearing-accessible unit.
  oneof hearing_accessible_unit_oneof {
    bool hearing_accessible_unit = 6;
    Exception hearing_accessible_unit_exception = 7;
  }

  ////////////////////////////////
  // Mobility-accessible features.

  // Mobility-accessible shower.
  oneof mobility_accessible_shower_oneof {
    bool mobility_accessible_shower = 10;
    Exception mobility_accessible_shower_exception = 11;
  }

  // Mobility-accessible bathtub.
  oneof mobility_accessible_bathtub_oneof {
    bool mobility_accessible_bathtub = 12;
    Exception mobility_accessible_bathtub_exception = 13;
  }

  // Mobility-accessible toilet.
  oneof mobility_accessible_toilet_oneof {
    bool mobility_accessible_toilet = 14;
    Exception mobility_accessible_toilet_exception = 15;
  }

  //////////////////////////////////
  // Hearing-accessible features.

  // Hearing-accessible doorbell.
  oneof hearing_accessible_doorbell_oneof {
    bool hearing_accessible_doorbell = 30;
    Exception hearing_accessible_doorbell_exception = 31;
  }

  // Hearing-accessible fire_alarm.
  oneof hearing_accessible_fire_alarm_oneof {
    bool hearing_accessible_fire_alarm = 32;
    Exception hearing_accessible_fire_alarm_exception = 33;
  }
}

message HealthAndSafety {
  // Website URL containing Health & Safety measures provided by the hotel.
  oneof learn_more_uri_oneof {
    string learn_more_uri = 2;
    Exception learn_more_uri_exception = 3;
  }

  EnhancedCleaning enhanced_cleaning = 5;
  IncreasedFoodSafety increased_food_safety = 6;
  MinimizedContact minimized_contact = 7;
  PersonalProtection personal_protection = 8;
  PhysicalDistancing physical_distancing = 9;

  reserved 4;  // multi-language support for "learn more" URL.
}

message EnhancedCleaning {
  // Enhanced cleaning of common areas.
  oneof common_areas_enhanced_cleaning_oneof {
    bool common_areas_enhanced_cleaning = 2;
    Exception common_areas_enhanced_cleaning_exception = 3;
  }

  // Enhanced cleaning of guest rooms.
  oneof guest_rooms_enhanced_cleaning_oneof {
    bool guest_rooms_enhanced_cleaning = 4;
    Exception guest_rooms_enhanced_cleaning_exception = 5;
  }

  // Commercial-grade disinfectant used to clean the property.
  oneof commercial_grade_disinfectant_cleaning_oneof {
    bool commercial_grade_disinfectant_cleaning = 6;
    Exception commercial_grade_disinfectant_cleaning_exception = 7;
  }

  // Employees trained in COVID-19 cleaning procedures.
  oneof employees_trained_cleaning_procedures_oneof {
    bool employees_trained_cleaning_procedures = 8;
    Exception employees_trained_cleaning_procedures_exception = 9;
  }

  // Employees trained in thorough hand-washing.
  oneof employees_trained_hand_washing_protocols_oneof {
    bool employees_trained_hand_washing_protocols = 10;
    Exception employees_trained_hand_washing_protocols_exception = 11;
  }

  // Employees wear masks, face shields, and/or gloves.
  oneof employees_wear_protective_equipment_oneof {
    bool employees_wear_protective_equipment = 12;
    Exception employees_wear_protective_equipment_exception = 13;
  }
}

message IncreasedFoodSafety {
  // Additional safety measures during food prep and serving.
  oneof food_preparation_and_serving_safe_handling_oneof {
    bool food_preparation_and_serving_safe_handling = 2;
    Exception food_preparation_and_serving_safe_handling_exception = 3;
  }

  // Additional sanitation in dining areas.
  oneof food_areas_additional_sanitation_oneof {
    bool food_areas_additional_sanitation = 4;
    Exception food_areas_additional_sanitation_exception = 5;
  }

  // Individually-packaged meals.
  oneof individual_packaged_meals_available_oneof {
    bool individual_packaged_meals_available = 6;
    Exception individual_packaged_meals_available_exception = 7;
  }

  // Disposable flatware.
  oneof disposable_flatware_oneof {
    bool disposable_flatware = 8;
    Exception disposable_flatware_exception = 9;
  }

  // Single-use menus.
  oneof single_use_food_menus_oneof {
    bool single_use_food_menus = 10;
    Exception single_use_food_menus_exception = 11;
  }
}

message MinimizedContact {
  // High-touch items, such as magazines, removed from common areas.
  oneof no_high_touch_items_common_areas_oneof {
    bool no_high_touch_items_common_areas = 2;
    Exception no_high_touch_items_common_areas_exception = 3;
  }

  // High-touch items, such as decorative pillows, removed from guest rooms.
  oneof no_high_touch_items_guest_rooms_oneof {
    bool no_high_touch_items_guest_rooms = 4;
    Exception no_high_touch_items_guest_rooms_exception = 5;
  }

  // Keyless mobile entry to guest rooms.
  oneof digital_guest_room_keys_oneof {
    bool digital_guest_room_keys = 6;
    Exception digital_guest_room_keys_exception = 7;
  }

  // Plastic key cards are disinfected or discarded.
  oneof plastic_keycards_disinfected_oneof {
    bool plastic_keycards_disinfected = 8;
    Exception plastic_keycards_disinfected_exception = 9;
  }

  // Buffer maintained between room bookings.
  oneof room_bookings_buffer_oneof {
    bool room_bookings_buffer = 10;
    Exception room_bookings_buffer_exception = 11;
  }

  // Housekeeping scheduled by request only.
  oneof housekeeping_scheduled_request_only_oneof {
    bool housekeeping_scheduled_request_only = 12;
    Exception housekeeping_scheduled_request_only_exception = 13;
  }

  // No-contact check-in and check-out.
  oneof contactless_checkin_checkout_oneof {
    bool contactless_checkin_checkout = 14;
    Exception contactless_checkin_checkout_exception = 15;
  }
}

message PersonalProtection {
  // Hand-sanitizer and/or sanitizing wipes in common areas.
  oneof common_areas_offer_sanitizing_items_oneof {
    bool common_areas_offer_sanitizing_items = 2;
    Exception common_areas_offer_sanitizing_items_exception = 3;
  }

  // In-room hygiene kits with masks, hand sanitizer, and/or antibacterial
  // wipes.
  oneof guest_room_hygiene_kits_available_oneof {
    bool guest_room_hygiene_kits_available = 4;
    Exception guest_room_hygiene_kits_available_exception = 5;
  }

  // Masks and/or gloves available for guests.
  oneof protective_equipment_available_oneof {
    bool protective_equipment_available = 6;
    Exception protective_equipment_available_exception = 7;
  }

  // Masks required on the property.
  oneof face_mask_required_oneof {
    bool face_mask_required = 8;
    Exception face_mask_required_exception = 9;
  }
}

message PhysicalDistancing {
  // Physical distancing required.
  oneof physical_distancing_required_oneof {
    bool physical_distancing_required = 2;
    Exception physical_distancing_required_exception = 3;
  }

  // Safety dividers at front desk and other locations.
  oneof plexiglass_used_oneof {
    bool plexiglass_used = 4;
    Exception plexiglass_used_exception = 5;
  }

  // Guest occupancy limited within shared facilities.
  oneof shared_areas_limited_occupancy_oneof {
    bool shared_areas_limited_occupancy = 6;
    Exception shared_areas_limited_occupancy_exception = 7;
  }

  // Private spaces designated in spa and wellness areas.
  oneof wellness_areas_have_private_spaces_oneof {
    bool wellness_areas_have_private_spaces = 8;
    Exception wellness_areas_have_private_spaces_exception = 9;
  }

  // Common areas arranged to maintain physical distancing.
  oneof common_areas_physical_distancing_arranged_oneof {
    bool common_areas_physical_distancing_arranged = 10;
    Exception common_areas_physical_distancing_arranged_exception = 11;
  }
}

message Sustainability {
  // Website URL containing sustainability information for the hotel.
  oneof sustainability_uri_oneof {
    string sustainability_uri = 2;
    Exception sustainability_uri_exception = 3;
  }

  EnergyEfficiency energy_efficiency = 5;
  WaterConservation water_conservation = 6;
  WasteReduction waste_reduction = 7;
  SustainableSourcing sustainable_sourcing = 8;
  SustainabilityCertifications sustainability_certifications = 9;

  reserved 4;  // multi-language support for sustainability_uri.
}

message EnergyEfficiency {
  // Energy conservation program.
  oneof energy_conservation_program_oneof {
    bool energy_conservation_program = 4;
    Exception energy_conservation_program_exception = 5;
  }

  // Energy use audited by an independent organization.
  oneof independent_organization_audits_energy_use_oneof {
    bool independent_organization_audits_energy_use = 6;
    Exception independent_organization_audits_energy_use_exception = 7;
  }

  // Energy from carbon-free sources.
  oneof carbon_free_energy_sources_oneof {
    bool carbon_free_energy_sources = 8;
    Exception carbon_free_energy_sources_exception = 9;
  }

  // Energy-efficient heating and cooling systems.
  oneof energy_efficient_heating_and_cooling_systems_oneof {
    bool energy_efficient_heating_and_cooling_systems = 10;
    Exception energy_efficient_heating_and_cooling_systems_exception = 11;
  }

  // Energy-efficient lighting.
  oneof energy_efficient_lighting_oneof {
    bool energy_efficient_lighting = 12;
    Exception energy_efficient_lighting_exception = 13;
  }

  // Energy-saving thermostats.
  oneof energy_saving_thermostats_oneof {
    bool energy_saving_thermostats = 14;
    Exception energy_saving_thermostats_exception = 15;
  }
}

message WaterConservation {
  // Water use audited by an independent organization.
  oneof independent_organization_audits_water_use_oneof {
    bool independent_organization_audits_water_use = 2;
    Exception independent_organization_audits_water_use_exception = 3;
  }

  // Water-efficient faucets.
  oneof water_saving_sinks_oneof {
    bool water_saving_sinks = 4;
    Exception water_saving_sinks_exception = 5;
  }

  // Water-efficient toilets.
  oneof water_saving_toilets_oneof {
    bool water_saving_toilets = 6;
    Exception water_saving_toilets_exception = 7;
  }

  // Water-efficient showers.
  oneof water_saving_showers_oneof {
    bool water_saving_showers = 8;
    Exception water_saving_showers_exception = 9;
  }

  // Towel reuse program.
  oneof towel_reuse_program_oneof {
    bool towel_reuse_program = 10;
    Exception towel_reuse_program_exception = 11;
  }

  // Linen reuse program.
  oneof linen_reuse_program_oneof {
    bool linen_reuse_program = 12;
    Exception linen_reuse_program_exception = 13;
  }
}

message WasteReduction {
  // Recycling program.
  oneof recycling_program_oneof {
    bool recycling_program = 2;
    Exception recycling_program_exception = 3;
  }

  // Food waste reduction program.
  oneof food_waste_reduction_program_oneof {
    bool food_waste_reduction_program = 4;
    Exception food_waste_reduction_program_exception = 5;
  }

  // Donates excess food.
  oneof donates_excess_food_oneof {
    bool donates_excess_food = 6;
    Exception donates_excess_food_exception = 7;
  }

  // Composts excess food.
  oneof composts_excess_food_oneof {
    bool composts_excess_food = 8;
    Exception composts_excess_food_exception = 9;
  }

  // Soap donation program.
  oneof soap_donation_program_oneof {
    bool soap_donation_program = 10;
    Exception soap_donation_program_exception = 11;
  }

  // Toiletry donation program.
  oneof toiletry_donation_program_oneof {
    bool toiletry_donation_program = 12;
    Exception toiletry_donation_program_exception = 13;
  }

  // Safely handles hazardous substances.
  oneof safely_handles_hazardous_substances_oneof {
    bool safely_handles_hazardous_substances = 14;
    Exception safely_handles_hazardous_substances_exception = 15;
  }

  // Safely disposes of electronics.
  oneof safely_disposes_electronics_oneof {
    bool safely_disposes_electronics = 16;
    Exception safely_disposes_electronics_exception = 17;
  }

  // Safely disposes of batteries.
  oneof safely_disposes_batteries_oneof {
    bool safely_disposes_batteries = 18;
    Exception safely_disposes_batteries_exception = 19;
  }

  // Safely disposes of lightbulbs.
  oneof safely_disposes_lightbulbs_oneof {
    bool safely_disposes_lightbulbs = 20;
    Exception safely_disposes_lightbulbs_exception = 21;
  }

  // Refillable toiletry containers.
  oneof refillable_toiletry_containers_oneof {
    bool refillable_toiletry_containers = 22;
    Exception refillable_toiletry_containers_exception = 23;
  }

  // Water bottle filling stations.
  oneof water_bottle_filling_stations_oneof {
    bool water_bottle_filling_stations = 24;
    Exception water_bottle_filling_stations_exception = 25;
  }

  // Compostable food containers and cutlery.
  oneof compostable_food_containers_and_cutlery_oneof {
    bool compostable_food_containers_and_cutlery = 26;
    Exception compostable_food_containers_and_cutlery_exception = 27;
  }

  // No Styrofoam food containers.
  oneof no_styrofoam_food_containers_oneof {
    bool no_styrofoam_food_containers = 28;
    Exception no_styrofoam_food_containers_exception = 29;
  }

  // No single-use plastic water bottles.
  oneof no_single_use_plastic_water_bottles_oneof {
    bool no_single_use_plastic_water_bottles = 30;
    Exception no_single_use_plastic_water_bottles_exception = 31;
  }

  // No single-use plastic straws.
  oneof no_single_use_plastic_straws_oneof {
    bool no_single_use_plastic_straws = 32;
    Exception no_single_use_plastic_straws_exception = 33;
  }
}

message SustainableSourcing {
  // Responsible purchasing policy.
  oneof responsible_purchasing_policy_oneof {
    bool responsible_purchasing_policy = 2;
    Exception responsible_purchasing_policy_exception = 3;
  }

  // Organic food and beverages.
  oneof organic_food_and_beverages_oneof {
    bool organic_food_and_beverages = 4;
    Exception organic_food_and_beverages_exception = 5;
  }

  // Locally sourced food and beverages.
  oneof locally_sourced_food_and_beverages_oneof {
    bool locally_sourced_food_and_beverages = 6;
    Exception locally_sourced_food_and_beverages_exception = 7;
  }

  // Responsibly sourced seafood.
  oneof responsibly_sources_seafood_oneof {
    bool responsibly_sources_seafood = 8;
    Exception responsibly_sources_seafood_exception = 9;
  }

  // Organic cage-free eggs.
  oneof organic_cage_free_eggs_oneof {
    bool organic_cage_free_eggs = 10;
    Exception organic_cage_free_eggs_exception = 11;
  }

  // Vegetarian meals.
  oneof vegetarian_meals_oneof {
    bool vegetarian_meals = 12;
    Exception vegetarian_meals_exception = 13;
  }

  // Vegan meals.
  oneof vegan_meals_oneof {
    bool vegan_meals = 14;
    Exception vegan_meals_exception = 15;
  }

  // Eco-friendly toiletries.
  oneof eco_friendly_toiletries_oneof {
    bool eco_friendly_toiletries = 16;
    Exception eco_friendly_toiletries_exception = 17;
  }
}

message SustainabilityCertifications {
  // ABCD Tourism - LaNoteTouristique.
  oneof abcd_tourism_lanotetouristique_oneof {
    bool abcd_tourism_lanotetouristique = 374;
    Exception abcd_tourism_lanotetouristique_exception = 375;
  }

  // Actively Green: Bronze.
  oneof actively_green_bronze_oneof {
    bool actively_green_bronze = 106;
    Exception actively_green_bronze_exception = 107;
  }

  // Actively Green: Silver.
  oneof actively_green_silver_oneof {
    bool actively_green_silver = 108;
    Exception actively_green_silver_exception = 109;
  }

  // Actively Green: Gold.
  oneof actively_green_gold_oneof {
    bool actively_green_gold = 110;
    Exception actively_green_gold_exception = 111;
  }

  // ARC360: Ambassador.
  oneof arc360_ambassador_oneof {
    bool arc360_ambassador = 364;
    Exception arc360_ambassador_exception = 365;
  }

  // Asian Ecotourism Standard for Accommodations (AESA).
  oneof asian_ecotourism_oneof {
    bool asian_ecotourism = 24;
    Exception asian_ecotourism_exception = 25;
  }

  // Audubon International.
  oneof audubon_international_oneof {
    bool audubon_international = 376;
    Exception audubon_international_exception = 377;
  }

  // Austrian Ecolabel.
  oneof austrian_ecolabel_oneof {
    bool austrian_ecolabel = 112;
    Exception austrian_ecolabel_exception = 113;
  }

  // B Lab Global.
  oneof b_lab_global_oneof {
    bool b_lab_global = 378;
    Exception b_lab_global_exception = 379;
  }

  // Beyond Green.
  oneof beyond_green_oneof {
    bool beyond_green = 346;
    Exception beyond_green_exception = 347;
  }

  // Bio Hotels.
  oneof bio_hotels_oneof {
    bool bio_hotels = 342;
    Exception bio_hotels_exception = 343;
  }

  // Biolia.
  oneof biolia_oneof {
    bool biolia = 380;
    Exception biolia_exception = 381;
  }

  // Bioscore Sustainable: C.
  oneof bioscore_sustainable_c_oneof {
    bool bioscore_sustainable_c = 116;
    Exception bioscore_sustainable_c_exception = 117;
  }

  // Bioscore Sustainable: B.
  oneof bioscore_sustainable_b_oneof {
    bool bioscore_sustainable_b = 118;
    Exception bioscore_sustainable_b_exception = 119;
  }

  // Bioscore Sustainable: A.
  oneof bioscore_sustainable_a_oneof {
    bool bioscore_sustainable_a = 120;
    Exception bioscore_sustainable_a_exception = 121;
  }

  // Bioscore Sustainable: A+.
  oneof bioscore_sustainable_a_plus_oneof {
    bool bioscore_sustainable_a_plus = 122;
    Exception bioscore_sustainable_a_plus_exception = 123;
  }

  // Biosphere Responsible Tourism Standard.
  oneof biosphere_responsible_tourism_oneof {
    bool biosphere_responsible_tourism = 26;
    Exception biosphere_responsible_tourism_exception = 27;
  }

  // BREEAM: Pass.
  oneof breeam_pass_oneof {
    bool breeam_pass = 2;
    Exception breeam_pass_exception = 3;
  }

  // BREEAM: Good.
  oneof breeam_good_oneof {
    bool breeam_good = 4;
    Exception breeam_good_exception = 5;
  }

  // BREEAM: Very Good.
  oneof breeam_very_good_oneof {
    bool breeam_very_good = 6;
    Exception breeam_very_good_exception = 7;
  }

  // BREEAM: Excellent.
  oneof breeam_excellent_oneof {
    bool breeam_excellent = 8;
    Exception breeam_excellent_exception = 9;
  }

  // BREEAM: Outstanding.
  oneof breeam_outstanding_oneof {
    bool breeam_outstanding = 10;
    Exception breeam_outstanding_exception = 11;
  }

  // Bureau Veritas.
  // This field is deprecated. The certification is now covered by
  // `gstc_criteria` and `turkiye_sustainable_tourism_program`.
  oneof bureau_veritas_oneof {
    bool bureau_veritas = 28 [deprecated = true];
    Exception bureau_veritas_exception = 29 [deprecated = true];
  }

  // CENIA EFS (Environmentally Friendly Service).
  oneof cenia_efs_oneof {
    bool cenia_efs = 124;
    Exception cenia_efs_exception = 125;
  }

  // Certified Green Hotel: Good.
  oneof certified_green_hotel_good_oneof {
    bool certified_green_hotel_good = 128;
    Exception certified_green_hotel_good_exception = 129;
  }

  // Certified Green Hotel: Very Good.
  oneof certified_green_hotel_very_good_oneof {
    bool certified_green_hotel_very_good = 130;
    Exception certified_green_hotel_very_good_exception = 131;
  }

  // Certified Green Hotel: Excellent.
  oneof certified_green_hotel_excellent_oneof {
    bool certified_green_hotel_excellent = 132;
    Exception certified_green_hotel_excellent_exception = 133;
  }

  // China Hospitality Association.
  oneof china_hospitality_association_oneof {
    bool china_hospitality_association = 382;
    Exception china_hospitality_association_exception = 383;
  }

  // ClimatePartner.
  oneof climate_partner_oneof {
    bool climate_partner = 384;
    Exception climate_partner_exception = 385;
  }

  // Control Union (GSTC Criteria).
  // This field is deprecated. The certification is now covered by
  // `gstc_criteria` and `turkiye_sustainable_tourism_program`.
  oneof control_union_oneof {
    bool control_union = 30 [deprecated = true];
    Exception control_union_exception = 31 [deprecated = true];
  }

  // Costa Rica Certification for Sustainable Tourism (CST): Basico.
  oneof costa_rica_sustainable_tourism_basico_oneof {
    bool costa_rica_sustainable_tourism_basico = 136;
    Exception costa_rica_sustainable_tourism_basico_exception = 137;
  }

  // Costa Rica Certification for Sustainable Tourism (CST): Elite.
  oneof costa_rica_sustainable_tourism_elite_oneof {
    bool costa_rica_sustainable_tourism_elite = 138;
    Exception costa_rica_sustainable_tourism_elite_exception = 139;
  }

  // DCA ESG: Sustainable.
  oneof dca_esg_sustainable_oneof {
    bool dca_esg_sustainable = 142;
    Exception dca_esg_sustainable_exception = 143;
  }

  // DCA ESG: Sustainable: L.
  oneof dca_esg_sustainable_l_oneof {
    bool dca_esg_sustainable_l = 144;
    Exception dca_esg_sustainable_l_exception = 145;
  }

  // DEHOGA Umweltcheck: Bronze.
  oneof dehoga_umweltcheck_bronze_oneof {
    bool dehoga_umweltcheck_bronze = 148;
    Exception dehoga_umweltcheck_bronze_exception = 149;
  }

  // DEHOGA Umweltcheck: Silver.
  oneof dehoga_umweltcheck_silver_oneof {
    bool dehoga_umweltcheck_silver = 150;
    Exception dehoga_umweltcheck_silver_exception = 151;
  }

  // DEHOGA Umweltcheck: Gold.
  oneof dehoga_umweltcheck_gold_oneof {
    bool dehoga_umweltcheck_gold = 152;
    Exception dehoga_umweltcheck_gold_exception = 153;
  }

  // EarthCheck: Silver.
  oneof earthcheck_silver_oneof {
    bool earthcheck_silver = 154;
    Exception earthcheck_silver_exception = 155;
  }

  // EarthCheck: Gold.
  oneof earthcheck_gold_oneof {
    bool earthcheck_gold = 156;
    Exception earthcheck_gold_exception = 157;
  }

  // EarthCheck: Platinum.
  oneof earthcheck_platinum_oneof {
    bool earthcheck_platinum = 158;
    Exception earthcheck_platinum_exception = 159;
  }

  // EarthCheck: Master.
  oneof earthcheck_master_oneof {
    bool earthcheck_master = 160;
    Exception earthcheck_master_exception = 161;
  }

  // ECOSmart.
  oneof ecosmart_oneof {
    bool ecosmart = 340;
    Exception ecosmart_exception = 341;
  }

  // Eco-Certification Malta Standard.
  oneof eco_certification_malta_oneof {
    bool eco_certification_malta = 34;
    Exception eco_certification_malta_exception = 35;
  }

  // Eco Climate Badge: Bronze.
  oneof eco_climate_badge_bronze_oneof {
    bool eco_climate_badge_bronze = 448;
    Exception eco_climate_badge_bronze_exception = 449;
  }

  // Eco Climate Badge: Silver.
  oneof eco_climate_badge_silver_oneof {
    bool eco_climate_badge_silver = 450;
    Exception eco_climate_badge_silver_exception = 451;
  }

  // Eco Climate Badge: Gold.
  oneof eco_climate_badge_gold_oneof {
    bool eco_climate_badge_gold = 452;
    Exception eco_climate_badge_gold_exception = 453;
  }

  // Eco-Romania.
  oneof eco_romania_oneof {
    bool eco_romania = 404;
    Exception eco_romania_exception = 405;
  }

  // Ecostars: 1 Ecostar.
  oneof ecostars_level1_oneof {
    bool ecostars_level1 = 164;
    Exception ecostars_level1_exception = 165;
  }

  // Ecostars: 2 Ecostars.
  oneof ecostars_level2_oneof {
    bool ecostars_level2 = 166;
    Exception ecostars_level2_exception = 167;
  }

  // Ecostars: 3 Ecostars.
  oneof ecostars_level3_oneof {
    bool ecostars_level3 = 168;
    Exception ecostars_level3_exception = 169;
  }

  // Ecostars: 4 Ecostars.
  oneof ecostars_level4_oneof {
    bool ecostars_level4 = 170;
    Exception ecostars_level4_exception = 171;
  }

  // Ecostars: 5 Ecostars.
  oneof ecostars_level5_oneof {
    bool ecostars_level5 = 172;
    Exception ecostars_level5_exception = 173;
  }

  // Ecotourism Australia ECO Certification Standard: Ecotourism.
  oneof ecotourism_australia_ecotourism_oneof {
    bool ecotourism_australia_ecotourism = 176;
    Exception ecotourism_australia_ecotourism_exception = 177;
  }

  // Ecotourism Australia ECO Certification Standard: EcotourismAdvanced.
  oneof ecotourism_australia_ecotourism_advanced_oneof {
    bool ecotourism_australia_ecotourism_advanced = 178;
    Exception ecotourism_australia_ecotourism_advanced_exception = 179;
  }

  // Ecotourism Kenya Eco-rating Certification Scheme: Bronze.
  oneof ecotourism_kenya_eco_rating_bronze_oneof {
    bool ecotourism_kenya_eco_rating_bronze = 182;
    Exception ecotourism_kenya_eco_rating_bronze_exception = 183;
  }

  // Ecotourism Kenya Eco-rating Certification Scheme: Silver.
  oneof ecotourism_kenya_eco_rating_silver_oneof {
    bool ecotourism_kenya_eco_rating_silver = 184;
    Exception ecotourism_kenya_eco_rating_silver_exception = 185;
  }

  // Ecotourism Kenya Eco-rating Certification Scheme: Gold.
  oneof ecotourism_kenya_eco_rating_gold_oneof {
    bool ecotourism_kenya_eco_rating_gold = 186;
    Exception ecotourism_kenya_eco_rating_gold_exception = 187;
  }

  // Ecoworldhotel: 1 Eco-Leaf.
  oneof ecoworldhotel_level1_oneof {
    bool ecoworldhotel_level1 = 352;
    Exception ecoworldhotel_level1_exception = 353;
  }

  // Ecoworldhotel: 2 Eco-Leaves.
  oneof ecoworldhotel_level2_oneof {
    bool ecoworldhotel_level2 = 354;
    Exception ecoworldhotel_level2_exception = 355;
  }

  // Ecoworldhotel: 3 Eco-Leaves.
  oneof ecoworldhotel_level3_oneof {
    bool ecoworldhotel_level3 = 356;
    Exception ecoworldhotel_level3_exception = 357;
  }

  // Ecoworldhotel: 4 Eco-Leaves.
  oneof ecoworldhotel_level4_oneof {
    bool ecoworldhotel_level4 = 358;
    Exception ecoworldhotel_level4_exception = 359;
  }

  // Ecoworldhotel: 5 Eco-Leaves.
  oneof ecoworldhotel_level5_oneof {
    bool ecoworldhotel_level5 = 360;
    Exception ecoworldhotel_level5_exception = 361;
  }

  // EDGE Green Building Certification.
  oneof edge_green_building_oneof {
    bool edge_green_building = 368;
    Exception edge_green_building_exception = 369;
  }

  // Eco-Management and Audit Scheme (EMAS).
  oneof emas_oneof {
    bool emas = 366;
    Exception emas_exception = 367;
  }

  // Environmentally Friendly Service.
  // This field is deprecated. The certification is covered by `cenia_efs`.
  oneof environmentally_friendly_service_oneof {
    bool environmentally_friendly_service = 334 [deprecated = true];
    Exception environmentally_friendly_service_exception = 335
        [deprecated = true];
  }

  // EU Ecolabel.
  oneof eu_ecolabel_oneof {
    bool eu_ecolabel = 188;
    Exception eu_ecolabel_exception = 189;
  }

  // FairMoove Environmental Footprint: A.
  oneof fairmoove_environmental_footprint_a_oneof {
    bool fairmoove_environmental_footprint_a = 472;
    Exception fairmoove_environmental_footprint_a_exception = 473;
  }

  // FairMoove Environmental Footprint: B.
  oneof fairmoove_environmental_footprint_b_oneof {
    bool fairmoove_environmental_footprint_b = 474;
    Exception fairmoove_environmental_footprint_b_exception = 475;
  }

  // FairMoove Environmental Footprint: C.
  oneof fairmoove_environmental_footprint_c_oneof {
    bool fairmoove_environmental_footprint_c = 476;
    Exception fairmoove_environmental_footprint_c_exception = 477;
  }

  // FairMoove Environmental Footprint: D.
  oneof fairmoove_environmental_footprint_d_oneof {
    bool fairmoove_environmental_footprint_d = 478;
    Exception fairmoove_environmental_footprint_d_exception = 479;
  }

  // FairMoove Environmental Footprint: E.
  oneof fairmoove_environmental_footprint_e_oneof {
    bool fairmoove_environmental_footprint_e = 480;
    Exception fairmoove_environmental_footprint_e_exception = 481;
  }

  // Fair Trade Tourism.
  oneof fair_trade_tourism_oneof {
    bool fair_trade_tourism = 190;
    Exception fair_trade_tourism_exception = 191;
  }

  // Fifty Shades Greener: Bronze.
  oneof fifty_shades_greener_bronze_oneof {
    bool fifty_shades_greener_bronze = 426;
    Exception fifty_shades_greener_bronze_exception = 427;
  }

  // Fifty Shades Greener: Silver.
  oneof fifty_shades_greener_silver_oneof {
    bool fifty_shades_greener_silver = 428;
    Exception fifty_shades_greener_silver_exception = 429;
  }

  // Fifty Shades Greener: Gold.
  oneof fifty_shades_greener_gold_oneof {
    bool fifty_shades_greener_gold = 430;
    Exception fifty_shades_greener_gold_exception = 431;
  }

  // Fifty Shades Greener: Emerald.
  oneof fifty_shades_greener_emerald_oneof {
    bool fifty_shades_greener_emerald = 432;
    Exception fifty_shades_greener_emerald_exception = 433;
  }

  // Fondation Les Pages vertes.
  oneof fondation_les_pages_vertes_oneof {
    bool fondation_les_pages_vertes = 388;
    Exception fondation_les_pages_vertes_exception = 389;
  }

  // FuturePlus.
  oneof futureplus_oneof {
    bool futureplus = 338;
    Exception futureplus_exception = 339;
  }

  // Global Ecosphere Retreats Standard.
  oneof global_ecosphere_retreats_standard_oneof {
    bool global_ecosphere_retreats_standard = 298;
    Exception global_ecosphere_retreats_standard_exception = 299;
  }

  // GREAT Green Deal Certification.
  oneof great_green_deal_oneof {
    bool great_green_deal = 38;
    Exception great_green_deal_exception = 39;
  }

  // Green Destinations: Level 1.
  oneof green_destinations_level1_oneof {
    bool green_destinations_level1 = 328;
    Exception green_destinations_level1_exception = 329;
  }

  // Green Destinations: Level 2.
  oneof green_destinations_level2_oneof {
    bool green_destinations_level2 = 330;
    Exception green_destinations_level2_exception = 331;
  }

  // Green Destinations: Level 3.
  oneof green_destinations_level3_oneof {
    bool green_destinations_level3 = 332;
    Exception green_destinations_level3_exception = 333;
  }

  // Green Globe: Certified.
  oneof green_globe_certified_oneof {
    bool green_globe_certified = 192;
    Exception green_globe_certified_exception = 193;
  }

  // Green Globe: Gold.
  oneof green_globe_gold_oneof {
    bool green_globe_gold = 194;
    Exception green_globe_gold_exception = 195;
  }

  // Green Globe: Platinum.
  oneof green_globe_platinum_oneof {
    bool green_globe_platinum = 196;
    Exception green_globe_platinum_exception = 197;
  }

  // Green Growth 2050 Standard: Silver.
  oneof green_growth2050_silver_oneof {
    bool green_growth2050_silver = 198;
    Exception green_growth2050_silver_exception = 199;
  }

  // Green Growth 2050 Standard: Gold.
  oneof green_growth2050_gold_oneof {
    bool green_growth2050_gold = 200;
    Exception green_growth2050_gold_exception = 201;
  }

  // Green Growth 2050 Standard: Platinum.
  oneof green_growth2050_platinum_oneof {
    bool green_growth2050_platinum = 202;
    Exception green_growth2050_platinum_exception = 203;
  }

  // Green Hospitality Certified.
  oneof green_hospitality_oneof {
    bool green_hospitality = 204;
    Exception green_hospitality_exception = 205;
  }

  // Green Key.
  oneof green_key_oneof {
    bool green_key = 44;
    Exception green_key_exception = 45;
  }

  // Green Key Global Eco-Rating: 1 Green Key.
  oneof green_key_global_level1_oneof {
    bool green_key_global_level1 = 206;
    Exception green_key_global_level1_exception = 207;
  }

  // Green Key Global Eco-Rating: 2 Green Keys.
  oneof green_key_global_level2_oneof {
    bool green_key_global_level2 = 208;
    Exception green_key_global_level2_exception = 209;
  }

  // Green Key Global Eco-Rating: 3 Green Keys.
  oneof green_key_global_level3_oneof {
    bool green_key_global_level3 = 210;
    Exception green_key_global_level3_exception = 211;
  }

  // Green Key Global Eco-Rating: 4 Green Keys.
  oneof green_key_global_level4_oneof {
    bool green_key_global_level4 = 212;
    Exception green_key_global_level4_exception = 213;
  }

  // Green Key Global Eco-Rating: 5 Green Keys.
  oneof green_key_global_level5_oneof {
    bool green_key_global_level5 = 214;
    Exception green_key_global_level5_exception = 215;
  }

  // Green Leaf Foundation.
  oneof green_leaf_foundation_oneof {
    bool green_leaf_foundation = 414;
    Exception green_leaf_foundation_exception = 415;
  }

  // Green Pearls Unique Places.
  oneof green_pearls_unique_places_oneof {
    bool green_pearls_unique_places = 216;
    Exception green_pearls_unique_places_exception = 217;
  }

  // Green Real Estate (GreenRE).
  oneof green_real_estate_greenre_oneof {
    bool green_real_estate_greenre = 390;
    Exception green_real_estate_greenre_exception = 391;
  }

  // Green Seal: Bronze.
  oneof green_seal_bronze_oneof {
    bool green_seal_bronze = 218;
    Exception green_seal_bronze_exception = 219;
  }

  // Green Seal: Silver.
  oneof green_seal_silver_oneof {
    bool green_seal_silver = 220;
    Exception green_seal_silver_exception = 221;
  }

  // Green Seal: Gold.
  oneof green_seal_gold_oneof {
    bool green_seal_gold = 222;
    Exception green_seal_gold_exception = 223;
  }

  // GreenSign Hotel: Level 1.
  // This field is deprecated. The certification is now covered by
  // `green_sign`.
  oneof green_sign_level1_oneof {
    bool green_sign_level1 = 234 [deprecated = true];
    Exception green_sign_level1_exception = 235 [deprecated = true];
  }

  // GreenSign Hotel: Level 2.
  // This field is deprecated. The certification is now covered by
  // `green_sign`.
  oneof green_sign_level2_oneof {
    bool green_sign_level2 = 236 [deprecated = true];
    Exception green_sign_level2_exception = 237 [deprecated = true];
  }

  // GreenSign Hotel: Level 3.
  // This field is deprecated. The certification is now covered by
  // `green_sign`.
  oneof green_sign_level3_oneof {
    bool green_sign_level3 = 238 [deprecated = true];
    Exception green_sign_level3_exception = 239 [deprecated = true];
  }

  // GreenSign Hotel: Level 4.
  // This field is deprecated. The certification is now covered by
  // `green_sign`.
  oneof green_sign_level4_oneof {
    bool green_sign_level4 = 240 [deprecated = true];
    Exception green_sign_level4_exception = 241 [deprecated = true];
  }

  // GreenSign Hotel: Level 5.
  // This field is deprecated. The certification is now covered by
  // `green_sign`.
  oneof green_sign_level5_oneof {
    bool green_sign_level5 = 242 [deprecated = true];
    Exception green_sign_level5_exception = 243 [deprecated = true];
  }

  // GreenSign Hotel
  oneof green_sign_oneof {
    bool green_sign = 232;
    Exception green_sign_exception = 233;
  }

  // Green Star Hotel Standard: 3 Stars.
  oneof green_star_level3_oneof {
    bool green_star_level3 = 224;
    Exception green_star_level3_exception = 225;
  }

  // Green Star Hotel Standard: 4 Stars.
  oneof green_star_level4_oneof {
    bool green_star_level4 = 226;
    Exception green_star_level4_exception = 227;
  }

  // Green Star Hotel Standard: 5 Stars.
  oneof green_star_level5_oneof {
    bool green_star_level5 = 228;
    Exception green_star_level5_exception = 229;
  }

  // GreenStep Sustainable Tourism: Bronze.
  oneof green_step_sustainable_tourism_bronze_oneof {
    bool green_step_sustainable_tourism_bronze = 246;
    Exception green_step_sustainable_tourism_bronze_exception = 247;
  }

  // GreenStep Sustainable Tourism: Silver.
  oneof green_step_sustainable_tourism_silver_oneof {
    bool green_step_sustainable_tourism_silver = 248;
    Exception green_step_sustainable_tourism_silver_exception = 249;
  }

  // GreenStep Sustainable Tourism: Gold.
  oneof green_step_sustainable_tourism_gold_oneof {
    bool green_step_sustainable_tourism_gold = 250;
    Exception green_step_sustainable_tourism_gold_exception = 251;
  }

  // GreenStep Sustainable Tourism: Platinum.
  oneof green_step_sustainable_tourism_platinum_oneof {
    bool green_step_sustainable_tourism_platinum = 252;
    Exception green_step_sustainable_tourism_platinum_exception = 253;
  }

  // Green Tourism: Bronze.
  oneof green_tourism_bronze_oneof {
    bool green_tourism_bronze = 312;
    Exception green_tourism_bronze_exception = 313;
  }

  // Green Tourism: Silver.
  oneof green_tourism_silver_oneof {
    bool green_tourism_silver = 314;
    Exception green_tourism_silver_exception = 315;
  }

  // Green Tourism: Gold.
  oneof green_tourism_gold_oneof {
    bool green_tourism_gold = 316;
    Exception green_tourism_gold_exception = 317;
  }

  // Green Tourism Active: Green Initiate.
  oneof green_tourism_active_green_initiate_oneof {
    bool green_tourism_active_green_initiate = 254;
    Exception green_tourism_active_green_initiate_exception = 255;
  }

  // Green Tourism Active: Green Leader.
  oneof green_tourism_active_green_leader_oneof {
    bool green_tourism_active_green_leader = 256;
    Exception green_tourism_active_green_leader_exception = 257;
  }

  // Green Tourism Active: Green Champion.
  oneof green_tourism_active_green_champion_oneof {
    bool green_tourism_active_green_champion = 258;
    Exception green_tourism_active_green_champion_exception = 259;
  }

  // Green Tourism Active: Green Champion with Distinction.
  oneof green_tourism_active_green_champion_distinction_oneof {
    bool green_tourism_active_green_champion_distinction = 260;
    Exception green_tourism_active_green_champion_distinction_exception = 261;
  }

  // GSTC Criteria.
  oneof gstc_criteria_oneof {
    bool gstc_criteria = 370;
    Exception gstc_criteria_exception = 371;
  }

  // Hilton LightStay.
  // This field is deprecated. The certification is no longer supported.
  oneof hilton_lightstay_oneof {
    bool hilton_lightstay = 52 [deprecated = true];
    Exception hilton_lightstay_exception = 53 [deprecated = true];
  }

  // Hostelling International Quality and Sustainability Standard: Small.
  oneof hostelling_international_quality_and_sustainability_small_oneof {
    bool hostelling_international_quality_and_sustainability_small = 262;
    Exception
        hostelling_international_quality_and_sustainability_small_exception =
            263;
  }

  // Hostelling International Quality and Sustainability Standard: Standard.
  oneof hostelling_international_quality_and_sustainability_standard_oneof {
    bool hostelling_international_quality_and_sustainability_standard = 264;
    Exception
        hostelling_international_quality_and_sustainability_standard_exception =
            265;
  }

  // Hostelling International Quality and Sustainability Standard: Key.
  oneof hostelling_international_quality_and_sustainability_key_oneof {
    bool hostelling_international_quality_and_sustainability_key = 266;
    Exception
        hostelling_international_quality_and_sustainability_key_exception = 267;
  }

  // Hotel Sustainability Basics.
  oneof hotel_sustainability_basics_oneof {
    bool hotel_sustainability_basics = 410;
    Exception hotel_sustainability_basics_exception = 411;
  }

  // Hoteles más Verdes: Bronce.
  oneof hoteles_mas_verdes_bronce_oneof {
    bool hoteles_mas_verdes_bronce = 268;
    Exception hoteles_mas_verdes_bronce_exception = 269;
  }

  // Hoteles más Verdes: Plata.
  oneof hoteles_mas_verdes_plata_oneof {
    bool hoteles_mas_verdes_plata = 270;
    Exception hoteles_mas_verdes_plata_exception = 271;
  }

  // Hoteles más Verdes: Oro.
  oneof hoteles_mas_verdes_oro_oneof {
    bool hoteles_mas_verdes_oro = 272;
    Exception hoteles_mas_verdes_oro_exception = 273;
  }

  // ibex fairstay: Bronze.
  oneof ibex_fairstay_bronze_oneof {
    bool ibex_fairstay_bronze = 276;
    Exception ibex_fairstay_bronze_exception = 277;
  }

  // ibex fairstay: Silver.
  oneof ibex_fairstay_silver_oneof {
    bool ibex_fairstay_silver = 278;
    Exception ibex_fairstay_silver_exception = 279;
  }

  // ibex fairstay: Gold.
  oneof ibex_fairstay_gold_oneof {
    bool ibex_fairstay_gold = 280;
    Exception ibex_fairstay_gold_exception = 281;
  }

  // ibex fairstay: Platinum.
  oneof ibex_fairstay_platinum_oneof {
    bool ibex_fairstay_platinum = 282;
    Exception ibex_fairstay_platinum_exception = 283;
  }

  // Intertek Ecocheck Standard.
  oneof intertek_ecocheck_standard_oneof {
    bool intertek_ecocheck_standard = 412;
    Exception intertek_ecocheck_standard_exception = 413;
  }

  // ISO 14001.
  oneof iso14001_oneof {
    bool iso14001 = 20;
    Exception iso14001_exception = 21;
  }

  // ISO 50001.
  oneof iso50001_oneof {
    bool iso50001 = 22;
    Exception iso50001_exception = 23;
  }

  // ISO 9001.
  oneof iso9001_oneof {
    bool iso9001 = 284;
    Exception iso9001_exception = 285;
  }

  // JEA Eco Mark Programme.
  oneof jea_eco_mark_programme_oneof {
    bool jea_eco_mark_programme = 392;
    Exception jea_eco_mark_programme_exception = 393;
  }

  // LEED: Certified.
  oneof leed_certified_oneof {
    bool leed_certified = 12;
    Exception leed_certified_exception = 13;
  }

  // LEED: Silver.
  oneof leed_silver_oneof {
    bool leed_silver = 14;
    Exception leed_silver_exception = 15;
  }

  // LEED: Gold.
  oneof leed_gold_oneof {
    bool leed_gold = 16;
    Exception leed_gold_exception = 17;
  }

  // LEED: Platinum.
  oneof leed_platinum_oneof {
    bool leed_platinum = 18;
    Exception leed_platinum_exception = 19;
  }

  // Miosotis Azores Standard.
  oneof miosotis_azores_standard_oneof {
    bool miosotis_azores_standard = 424;
    Exception miosotis_azores_standard_exception = 425;
  }

  // Mission Zero Academy (MiZA) : Level 1.
  oneof mission_zero_academy_miza_level1_oneof {
    bool mission_zero_academy_miza_level1 = 420;
    Exception mission_zero_academy_miza_level1_exception = 421;
  }

  // Mission Zero Academy (MiZA) : Level 2.
  oneof mission_zero_academy_miza_level2_oneof {
    bool mission_zero_academy_miza_level2 = 394;
    Exception mission_zero_academy_miza_level2_exception = 395;
  }

  // Mission Zero Academy (MiZA) : Level 3.
  oneof mission_zero_academy_miza_level3_oneof {
    bool mission_zero_academy_miza_level3 = 422;
    Exception mission_zero_academy_miza_level3_exception = 423;
  }

  // NABERS Energy.
  oneof nabers_energy_oneof {
    bool nabers_energy = 398;
    Exception nabers_energy_exception = 399;
  }

  // NABERS Water.
  oneof nabers_water_oneof {
    bool nabers_water = 400;
    Exception nabers_water_exception = 401;
  }

  // Nordic Swan Ecolabel.
  oneof nordic_swan_ecolabel_oneof {
    bool nordic_swan_ecolabel = 70;
    Exception nordic_swan_ecolabel_exception = 71;
  }

  // Preferred by Nature Sustainable Tourism Standard for Accommodation.
  oneof preferred_by_nature_sustainable_tourism_oneof {
    bool preferred_by_nature_sustainable_tourism = 58;
    Exception preferred_by_nature_sustainable_tourism_exception = 59;
  }

  // QIA Services: Green.
  oneof qia_services_green_oneof {
    bool qia_services_green = 434;
    Exception qia_services_green_exception = 435;
  }

  // QIA Services: Silver.
  oneof qia_services_silver_oneof {
    bool qia_services_silver = 436;
    Exception qia_services_silver_exception = 437;
  }

  // QIA Services: Gold.
  oneof qia_services_gold_oneof {
    bool qia_services_gold = 438;
    Exception qia_services_gold_exception = 439;
  }

  // Qualmark: Bronze.
  oneof qualmark_bronze_oneof {
    bool qualmark_bronze = 440;
    Exception qualmark_bronze_exception = 441;
  }

  // Qualmark: Silver.
  oneof qualmark_silver_oneof {
    bool qualmark_silver = 442;
    Exception qualmark_silver_exception = 443;
  }

  // Qualmark: Gold.
  oneof qualmark_gold_oneof {
    bool qualmark_gold = 444;
    Exception qualmark_gold_exception = 445;
  }

  // Queervadis.
  oneof queervadis_oneof {
    bool queervadis = 466;
    Exception queervadis_exception = 467;
  }

  // Sakura Quality An ESG Practice Standard: 1 Cherry Blossom.
  oneof sakura_quality_level1_oneof {
    bool sakura_quality_level1 = 92;
    Exception sakura_quality_level1_exception = 93;
  }

  // Sakura Quality An ESG Practice Standard: 2 Cherry Blossoms.
  oneof sakura_quality_level2_oneof {
    bool sakura_quality_level2 = 94;
    Exception sakura_quality_level2_exception = 95;
  }

  // Sakura Quality An ESG Practice Standard: 3 Cherry Blossoms.
  oneof sakura_quality_level3_oneof {
    bool sakura_quality_level3 = 96;
    Exception sakura_quality_level3_exception = 97;
  }

  // Sakura Quality An ESG Practice Standard: 4 Cherry Blossoms.
  oneof sakura_quality_level4_oneof {
    bool sakura_quality_level4 = 98;
    Exception sakura_quality_level4_exception = 99;
  }

  // Sakura Quality An ESG Practice Standard: 5 Cherry Blossoms.
  oneof sakura_quality_level5_oneof {
    bool sakura_quality_level5 = 100;
    Exception sakura_quality_level5_exception = 101;
  }

  // SERNATUR Sello S: Level 1.
  oneof sernatur_sello_level1_oneof {
    bool sernatur_sello_level1 = 288;
    Exception sernatur_sello_level1_exception = 289;
  }

  // SERNATUR Sello S: Level 2.
  oneof sernatur_sello_level2_oneof {
    bool sernatur_sello_level2 = 290;
    Exception sernatur_sello_level2_exception = 291;
  }

  // SERNATUR Sello S: Level 3.
  oneof sernatur_sello_level3_oneof {
    bool sernatur_sello_level3 = 292;
    Exception sernatur_sello_level3_exception = 293;
  }

  // Seychelles Sustainable Tourism Label.
  oneof seychelles_sustainable_tourism_label_oneof {
    bool seychelles_sustainable_tourism_label = 294;
    Exception seychelles_sustainable_tourism_label_exception = 295;
  }

  // SMARTCERTIFICATION.IT.
  oneof smartcertificationit_oneof {
    bool smartcertificationit = 402;
    Exception smartcertificationit_exception = 403;
  }

  // SOCOTEC SuMS.
  oneof socotec_sums_oneof {
    bool socotec_sums = 296;
    Exception socotec_sums_exception = 297;
  }

  // Sustainable Meetings Berlin.
  oneof sustainable_meetings_berlin_oneof {
    bool sustainable_meetings_berlin = 344;
    Exception sustainable_meetings_berlin_exception = 345;
  }

  // Sustainable Tourism Network Certification.
  oneof sustainable_tourism_network_oneof {
    bool sustainable_tourism_network = 468;
    Exception sustainable_tourism_network_exception = 469;
  }

  // Sustainable Travel Ireland – GSTC Industry Criteria: Bronze.
  oneof sustainable_travel_ireland_bronze_oneof {
    bool sustainable_travel_ireland_bronze = 318;
    Exception sustainable_travel_ireland_bronze_exception = 319;
  }

  // Sustainable Travel Ireland – GSTC Industry Criteria: Silver.
  oneof sustainable_travel_ireland_silver_oneof {
    bool sustainable_travel_ireland_silver = 320;
    Exception sustainable_travel_ireland_silver_exception = 321;
  }

  // Sustainable Travel Ireland – GSTC Industry Criteria: Gold.
  oneof sustainable_travel_ireland_gold_oneof {
    bool sustainable_travel_ireland_gold = 322;
    Exception sustainable_travel_ireland_gold_exception = 323;
  }

  // Sustonica - Sustainable Vacation Rental.
  oneof sustonica_sustainable_vacation_rental_oneof {
    bool sustonica_sustainable_vacation_rental = 336;
    Exception sustonica_sustainable_vacation_rental_exception = 337;
  }

  // The Long Run.
  // This field is deprecated. The certification is covered by
  // `global_ecosphere_retreats_standard`.
  oneof the_long_run_oneof {
    bool the_long_run = 406 [deprecated = true];
    Exception the_long_run_exception = 407 [deprecated = true];
  }

  // TOFTigers Footprint Certification: Good.
  oneof tof_tigers_footprint_good_oneof {
    bool tof_tigers_footprint_good = 302;
    Exception tof_tigers_footprint_good_exception = 303;
  }

  // TOFTigers Footprint Certification: Quality.
  oneof tof_tigers_footprint_quality_oneof {
    bool tof_tigers_footprint_quality = 304;
    Exception tof_tigers_footprint_quality_exception = 305;
  }

  // TOFTigers Footprint Certification: Outstanding.
  oneof tof_tigers_footprint_outstanding_oneof {
    bool tof_tigers_footprint_outstanding = 306;
    Exception tof_tigers_footprint_outstanding_exception = 307;
  }

  // TOFTigers PUG certification: Good.
  oneof tof_tigers_pug_good_oneof {
    bool tof_tigers_pug_good = 308;
    Exception tof_tigers_pug_good_exception = 309;
  }

  // TOFTigers PUG certification: Quality.
  oneof tof_tigers_pug_quality_oneof {
    bool tof_tigers_pug_quality = 310;
    Exception tof_tigers_pug_quality_exception = 311;
  }

  // TOFTigers PUG certification: Outstanding.
  oneof tof_tigers_pug_outstanding_oneof {
    bool tof_tigers_pug_outstanding = 174;
    Exception tof_tigers_pug_outstanding_exception = 175;
  }

  // TourCert Certification.
  oneof tourcert_certification_oneof {
    bool tourcert_certification = 324;
    Exception tourcert_certification_exception = 325;
  }

  // Travelife Standard for Hotels & Accommodations.
  oneof travelife_oneof {
    bool travelife = 64;
    Exception travelife_exception = 65;
  }

  // Tudestino Sostenible.
  oneof tudestino_sostenible_oneof {
    bool tudestino_sostenible = 408;
    Exception tudestino_sostenible_exception = 409;
  }

  // Türkiye Sustainable Tourism Program.
  oneof turkiye_sustainable_tourism_program_oneof {
    bool turkiye_sustainable_tourism_program = 372;
    Exception turkiye_sustainable_tourism_program_exception = 373;
  }

  // United Certification Systems Limited.
  // This field is deprecated. The certification is now covered by
  // `gstc_criteria`.
  oneof united_certification_systems_limited_oneof {
    bool united_certification_systems_limited = 66 [deprecated = true];
    Exception united_certification_systems_limited_exception = 67
        [deprecated = true];
  }

  // Viabono.
  oneof viabono_oneof {
    bool viabono = 348;
    Exception viabono_exception = 349;
  }

  // Vireo Srl (GSTC Criteria).
  // This field is deprecated. The certification is now covered by
  // `gstc_criteria` and `turkiye_sustainable_tourism_program`.
  oneof vireo_srl_oneof {
    bool vireo_srl = 68 [deprecated = true];
    Exception vireo_srl_exception = 69 [deprecated = true];
  }

  // Wyndham Green: Core.
  // This field is deprecated. The certification is no longer supported.
  oneof wyndham_green_core_oneof {
    bool wyndham_green_core = 80 [deprecated = true];
    Exception wyndham_green_core_exception = 81 [deprecated = true];
  }

  // Wyndham Green: Essential.
  // This field is deprecated. The certification is no longer supported.
  oneof wyndham_green_essential_oneof {
    bool wyndham_green_essential = 82 [deprecated = true];
    Exception wyndham_green_essential_exception = 83 [deprecated = true];
  }

  // Wyndham Green: Proficient.
  // This field is deprecated. The certification is no longer supported.
  oneof wyndham_green_proficient_oneof {
    bool wyndham_green_proficient = 84 [deprecated = true];
    Exception wyndham_green_proficient_exception = 85 [deprecated = true];
  }

  // Wyndham Green: Advanced.
  // This field is deprecated. The certification is no longer supported.
  oneof wyndham_green_advanced_oneof {
    bool wyndham_green_advanced = 86 [deprecated = true];
    Exception wyndham_green_advanced_exception = 87 [deprecated = true];
  }

  // Wyndham Green: Expert.
  // This field is deprecated. The certification is no longer supported.
  oneof wyndham_green_expert_oneof {
    bool wyndham_green_expert = 88 [deprecated = true];
    Exception wyndham_green_expert_exception = 89 [deprecated = true];
  }
}

// Exception mode. Only use this if the factual information cannot be
// represented by the relevant proto field. i.e. a service is only available
// during some days of the week, or an amenity is only available seasonally.
enum Exception {
  UNSPECIFIED_REASON = 0;
}

message Metadata {
  // REQUIRED.
  // The ISO 8601 datetime at which the Lodging data is asserted to be
  // true in the real world. Examples:
  // 2018-11-13T13:14:52-0800
  // 2018-11-13T13:14:52Z
  string last_updated = 1;
}