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. On the day of booking the apartment before 09:00 PM, guests must contact the administration to draw up an electronic contract and receive instructions for check-in. Contact information is provided in the booking confirmation.