Some ladies are offering this kind of service in Belgradostraat, but they are usually in their forties (not young mistresses like in Antwerp). Nevertheless, if you are only looking for soft kinky games, you can always bring your own toys and try to ask directly to the girls if they can do that or not. Strap-on and foot-fetish are usually accepted by most of the girls working there (most of the time without extra, but of course it also depends how long you want to stay...).