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. Late-night and early-morning check-in is available only by prior arrangement. Guests are required to present a valid identity document, passport or driver's licence, and pay a security deposit at check-in. The deposit is refunded after the apartment has been inspected and cleaned, provided no damage is found. Guests under the influence of alcohol or drugs will not be accommodated. Smoking, parties and excessive noise are strictly prohibited. In the event of a violation, the rental agreement will be terminated, and both the accommodation payment and the security deposit will be forfeited. Only guests aged 21 and over are permitted to check in. A rental agreement is signed upon arrival.