SPA with Infrared sauna in northeast CH or BW

Sports and Hobbies
1
Hi, does anyone know a SPA with IR sauna close to Zurich, Saint Gallen or Konstanz?

I know there is one in Bad Zurzach but I do not want to go there.

2
Tamina Therme in Bad Ragaz has one.

3
I have been in Tamina few months back and I haven't see it. Where is it?