Clubs in Dusseldorf

Hi, my partner (M) and I (F) (late twenties) will be in Dusseldorf in February/March and we're looking for recommendations for a good swingers club, or any similar places related to this lifestyle.

We would appreciate if you'd share your experiences also (why is it good for you) rather than just naming the place.

We're pretty much open to anything, from wellness and spa to some kinky and BDSM stuff also so any recommendation is good to know so we can decide what do we want.