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 takes place remotely. To receive check-in instructions, guests must write to WhatsApp or call the contact number; the manager’s working hours for processing messages are from 6:00 AM to 11:00 PM.