Hi
I don't know where in Ams you went but I like
http://www.fun4two.nl a lot!
Paris is nice too: "Les Chandelles", the most high class and select swinger club in Paris.
It's for couples only (some very selected men allowed the sunday and monday evening).
The entrance is very difficult and you must be very smart looking to be accepted in. Dress mandatory for women. Smart clothes for men. Inside the club, you will find a dancing area with good music and some more sexy rooms. The place is also a good restaurant.
http://www.les-chandelles.com
Another very nice one with restaurant in Paris is Deux รก Deux url is
http://www.2plus2.net/English/index1.html
Oh and the French even swing in lunch time :-) oh lala
Hope this is helpful
Kim