Taking my wife to Hamburg......

I'm taking my quite conservative wife to Hamburg for a long weekend. She's super prude at home in UK, but has been known to loosen abroad (walking naked in Paris except for shoes and coat; nude mixed sauna in Stockholm). Can anyone suggest places to visit in Hamburg that are erotic but not seedy, massage services that are sensual, etc. Have never got a nude posed pic at home - but here's one from a vacation a couple of years ago. If I get her to the right place, it could be the next step in converting her.....

You might want to try Hanover, instead of Hamberg. On the weekends, you get lots of kids, but the spas are excellent during the week.
Do a search- there are a few health spas, and there are a few spas like this one:
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