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. The hotel complex is part of the Verkhniy Bor recreation center, on the territory of which the OTB hotel complex and the Sosnovaya hotel are also located. From May 12 to May 23, 2026, there will be a technical break in the operation of the thermal pool at the OTB hotel complex. Opening hours of the thermal pools: Tuesday — from 12:00 PM to 01:00 AM, Monday, Wednesday - Sunday — from 09:00 AM to 01:00 AM. Sanitation in the pool is carried out on Tuesday from 09:00 AM to 12:00 PM. The price of accommodation includes: — visiting two open thermal pools with mineral water on the territory of the Istochnik spa hotel and the OTB complex; — visiting the spa center: hamam, Finnish sauna, jacuzzi and fonts.