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. Short-term and long-term rentals are possible, special living conditions may be provided. The minimum period for booking an apartment is 4 days. The apartment is cleaned every 3 days with a complete change of bed linen and towels.