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 done in person. Guests are required to contact the apartment in advance to receive check-in instructions. Check-in with the information already received is possible around the clock, but by prior agreement. If guests are unable to reach the apartment by phone, they can send their inquiry via WhatsApp or email. Contact details are provided in the booking confirmation.