our spa and pool area isn´t textile free. Only our sauna area is textile free. But "Heselbacher Hof" (not far away from us) has a textile free spa and pool area.
Kind Regards from Tonbach Valley
I am not 100% certain but believe that you can. The spa had its own designated area with a small cafe and outdoor seating area that food was served. Services are additional to guest so that is why i believe you can pay a daily fee. Great place to unwind after a trek in the woods