Ahhh, how I miss the hot springs in Taiwan. The ones that are close to my in-law's home is in Beitou which is near the Mt. Yang-ming in Taipei.
Here shows one of the traditional public hot spring bathrooms. Now there are so many trendy spas in the area.
The natural hot spring in Beitou. In some of the public part, you can actually boil eggs in the hot springs. I did it when I was a kid.
I almost ordered one of those wooden tubs and had it shipped to US when I was in Taiwan. The shipping is too expensive. I think there is a maker in Berkeley that sells this kind of wooden tub. I like how the tub is small but deep so you can soak your whole body and that's the whole point.