Sarov is a closed city. Entrance to the city is carried out only with passes. 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. Front desk is open 24/7. Guests can get a pass to the city if they are going to visit a relative or on a business trip. In case of check-in after 09:00 PM, guests should inform the hotel in advance and get check-in instructions. Contact information can be found on the booking confirmation.