In all types of cold room the ice beds consist of a large block of illuminated ice with a thick mattress and a layer of reindeer hide on which you lay a cosy polar sleeping bag (this will be provided to you). You aren't sleeping directly on ice. You only need to sleep in a single layer, usually your thermals, as you snuggle down inside the bag. Warm socks and a hat are also recommended. The snow walls are very sound-isolating so you can be sure of a peaceful night. You will be awakened by one of the hotel guides and served hot lingonberry juice in bed.  You change in the adjacent warm Riverside Lobby, which has a comfortable lounge area with a log burner plus warm showers, toilets, sauna and lockable storage facilities. You will be given a full orientation tour before your night on ice, the guides are there to answer any questions and make sure you have a good experience.