I think if you are looking for dank then there a few places I would try, Grey Area being on the top three of the list. I also enjoy Barney's and honestly I like Greenhouse too. The Tweede Kamer is great and so is the noon. If you want a beer and still be able to get down on some fire, I would go to The Waterhole in Leidseplien, it is a great bar, wonderful environment and they allow you to enjoy your fine herb there.