I plan to be in Hannover in April for a trade show and looking for some fun in the evenings.  Had a lot of fun at some fkks when I visited Dusseldorf in October.  I've done some research and it appears that Villa is the best/only option for fkk in Hannover.  Anybody ever have experience with Villa?  Any other suggeations of good non-fkk places or other fkks that I might have missed???