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 are kindly requested to contact the property prior to arrival for check-in instructions. Contact information can be found on the booking confirmation. Check-in is done remotely. After paying for the reservation, guests need to send the organizer a phone number to issue an electronic key.