the grey area, blue bird, rokerj or however you spell it.. hmm, abraxis was a super nice coffee shop, much bigger then sum.. barney's, greenhouse has good food..
when you go into a coffee shop, look for a small paper back book called the smokers guide to amsterdam, it's like 5 euro or so and has maps and coupons to different coffee shops, and is just pretty fucking cool imo..
they also have a kickass website that they list all kinds of strains, and do a small smoke report on them, and where they were bought at..they also have a hashish section as well as bud.. check it out before you go..
btw, stay away from the bulldog, they're like the tourist trap of coffee shops.. pricey and not that good of bud.. they're all over the place as well..