Amsterdam is the best, i been there a few times, a good place to stay is the bulldog hotel http://www.bulldog.nl/ , the atmosphere is great and it has a range of rooms from sharred to private and they are all really nice, its also the centre of the red light district which is cool as its about 10 mins walk from central station. There is a coffee shop next door to it aswell, its not the best coffee shop but if you run out and cant b bothered walking far its usefull.

Some of my fav coffee shops....... pink floyd is cool, good weed. The last waterhole is good aswell, they have good weed all the time and live music most nights if your into that. Central always seems to have some nice blueberry aswell.

I would avoid the grasshoper......rip off !!!!

here are some sites that are usefull esp the coffee shop map http://www.coffeeshop.freeuk.com/ACDfrmGu.html

This link has some up to date weed reviews
http://www.smokersguide.com/sg/index.html

Peace