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. Guests are required to provide a negative test for COVID-19, made no more than three days before check-in, a complete vaccination certificate or a certificate of a previous COVID-19 disease, provided that recovery has occurred no more than 6 months before arrival.