Travelpartner citytrip Beograd (Serbia): 8-15 september

I'm still looking for a young (-45) sportive travelpartner for the trip to Belgrado (Beograd) in Servi (Serbia): from 8-15 september.
Rent a airbnb for two on the moment...
Discover the city, visit a nude beach, visit a sauna ...
(All possible, but no must... )
I sleep naked in bed..