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 hotel immediately after booking to confirm the check-in time. Contact information is provided in the booking confirmation. After 9:00 PM, contactless check-in. The latest time to contact the hotelier via WhatsApp is 11:00 PM, after this time it is impossible to receive check-in instructions.