There is an American dude married to a dutch duddet and they have small company that does tours for ganja smokers in Amsterdam for a small fee. They have been featured on youtube by another cool guy. Sadly i can't remember any of their names right now but maybe some of the folks in here know what I'm talking about or you can Google it.
They seem to know Amsterdam in and out, perhaps should look for them!
ps
I am not affiliated with any of them, just saying!
\Look for rifman hash, its real good Moroccan, I think Dampkring coffeeshop stocks it.