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 should contact the property in advance for instructions on how to check in. Contact information is provided on the booking confirmation. An agreement is concluded upon check-in. Check-in is possible for guests over 25 years old.