These cabins were built in 1968 and are authentic from that time. As far as possible, no changes will be made in the future. All the cabins have an 800W electric heater so that it will be possible to use it in winter.
When it’s freezing it’s good to keep the vents open to air out moisture that mostly comes from breathing. Each person breathes out something like 0.5 to 1 liter of water during a day. Stay dry and keep warm.