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. Registration is free for the duration of the booking. Registration beyond the booking period is by agreement. Contact information is provided in the booking confirmation. For guests who are residents of the European Union, temporary registration is not included in the booking price and is paid separately.