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 carried out remotely. Before check-in, guests must register in a third-party application. If guests sleep separately, a second set of bed linen is charged at an additional cost of RUB 500.00.