Check out these places....
Cafe In De Wildermann (Flying Dog have or did have a tie up with these guys on a farmhouse IPA)
Cafe Belgique
Browerij 't Ij (a little out of the centre, but easy on public transport)
This site is by Ron Pattinson (who you may have heard of)
http://www.europeanbeerguide.net/amspubs1.htm
I've used the guide many times and he's pretty much spot on with his selections.
Have a great trip
