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. Front desk is open 24/7. Administrator of the apartment reserves the right of canceling of booking in cases when it's impossible to contact guest by the specified contacts. Also, within days after booking, guests must inform the apartment administratot about estimated time of arrival. Personal check-in, guests are greeted and checked in.