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. An advance payment is required to confirm the reservation. To transfer the prepayment, the hotel sends the details to the guests or issues an invoice. The prepayment must be made within 2 days from the date of receipt of the details. If the payment is not made, the booking is considered invalid. Contact information is provided on the booking confirmation. Free cancellation is only possible 10 days before arrival. Free accommodation with dogs of only decorative breeds is possible.