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. Check-in in the flat is carried out in a contactless way. The key to the flat is in the safe near the front door. On the day of check-in, guests receive a code from the safe. In addition to the cost of accommodation, a deposit is provided, which is returned to the guest within a day after the guest's departure, as soon as the cleaning is completed. The amount is refunded provided that the property was not damaged and the guests did not smoke in the flat.