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. Front desk is open 24/7. For guests celebrating an anniversary or wedding, a bottle of champagne or wine is provided. Smoking is prohibited in the flat. A specially designated place is located in the entrance to the half-floor above. If necessary, an additional set of bed linen is provided, the service is paid. Children under 7 years old stay free of charge, there is a cot on wheels for the youngest. Check-in is remote. All check-in instructions are given after providing the first page of the passport of all guests via WhatsApp and making payment for accommodation and a deposit, which is returned at the end of the stay, provided there is no heavy pollution, traces of smoking and no damage to property.