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. Only dogs up to 5 kg and over 2 years old are allowed. Dogs must be groomed before arrival. Dogs are not permitted on sofas and beds. The additional charge for one dog is 25% of the accommodation cost, and for two dogs, it is 50% of the accommodation cost.