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. Pets are not allowed. Smoking and hosting loud parties are not permitted in the flat. Minors can only be accommodated when accompanied by their parents. A list of all guests must be provided in advance, prior to arrival.