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. Documents must be submitted online. Check-in information is sent to guests via messaging apps between 09:00 AM and 12:00 AM, but check-in is possible at any time. If guests are not contacted, they should message the number provided in their booking confirmation via messaging apps for check-in instructions.