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 over 25 years of age are allowed to check in in accordance with the agreement concluded upon check-in. This restriction does not apply to guests on business trips and students who have arrived for a long session.