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 asked to contact the accommodation immediately after booking. Contact information is provided in the booking confirmation. Calls are accepted until 10:00 PM. For late check-in, guests need to contact the accommodation in advance to arrange the check-in time.