Bring something to drink, swimwear and a towel to sit on. Whole-body thermotherapy has been used in various forms for thousands of years in many parts of the world for hygiene, health, social, and spiritual purposes. This is the traditional Finnish sauna where you stay 5-20 minutes at temperatures of 80°C–100°C with dry air and relative humidity of 10% to 20%. Throw some water over the heated rocks now and then to increase the humidity. When you need to cool down, the lake is just outside and the water temperature can be low when you combine the bath with a hot sauna. There is room for 6 person but be careful, the stove in the middle is hot. Cleaning is performed by the guest. No cleaning checks are done between the passes.