The requirements for documents needed at check-in depend on the type of accommodation and the applicable regulations. For hotels and other accommodation facilities, a Russian passport, an international passport, or a driver’s license may be accepted. For apartments, serviced apartments, and other properties where check-in or contract conclusion is carried out according to the rules of a specific property, the required documents are determined by the property itself. Guests must contact the check-in manager by 11:00 PM to sign the agreement and receive check-in instructions. Contact information is provided in the booking confirmation. Guests must be 21 years of age or older to check into the accommodation, in accordance with the agreement signed upon check-in. Smoking is prohibited indoors. Pets are not allowed. Registration documents and a receipt are provided online.