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. Each room can accommodate an extra bed free of charge for 1 child under 6 years old. From 7 to 18 years old the cost of accommodation: RUB 800.00.