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 must be 21 years of age or older to check into the accommodation, in accordance with the agreement signed upon check-in. Smoking is prohibited indoors. Pets are not allowed. Registration documents and a receipt are provided online. Contactless check-in is available through an online system, allowing guests to check in at any time. Before check-in, guests must: — fill out the contract details; — sign the contract electronically; — pay a deposit. After check-out and property inspection, the deposit will be refunded in full, provided there are no violations of the rules or damage to the property.