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. Smoking, noisy events, and pets are prohibited indoors. Cashless payments, accounting documents, and receipts with QR codes are accepted. Bed linens are hung to dry in the flat.