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. Check-in is contactless. Guests receive a code for the safe with keys after calling. If the flat is available, earlier check-in is possible by agreement. Smoking is prohibited in the flat. Noisy events and accommodating more guests than specified in the reservation are not allowed.