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 can check into the flat remotely by dialing the apartment number on the intercom and receiving the code from the key holder located on the apartment door, by contacting the owner by phone. Contact details are provided in the booking confirmation.