A big sauna with a huge window looking out on the forest and the outdoor hot tub that's big enough for many people to warm up from the cold. This could also be used as a cold pool for dunking after sweating in the sauna.
Bamboo thrives in the bathroom. Lucky bamboo needs very little light and should be placed in low, indirect light. It doesn’t even need any soil – simply pop the stalk into a container filled with pebbles and water.