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. The apartments provide a mattress as an extra bed for RUB 300.00 per person per night. Guests are required to notify the administration of apartments to check-in in advance via WhatsApp and receive check-in instructions. Contact information can be found on the booking confirmation.