The spa itself is really beautiful.
It is right in the middle of Berlin but even when you are sitting naked in Pandangan, the upstairs sauna, with a picture window and a wide view, all you can see is trees.
They didn't listen to me and only told me in a very rude way to go and put the other glasses back like I was about to steal them.
Afterward, you can dose your body with a cold shower, although difficult to tolerate, it is worthwhile for the full sauna experience.