Drugs binge in Amsterdam

been to the Dam and im going before i head over to london. coffee shops are amazing...especially if your a "pot conniseur". im gunna be there from the 29th of sept to oct 3 if you wanna smoke a fatty and mash around Dam.

That's what we're on but we won't be over till the weekend of 6th Nov. Any recommendations, aside from the usual Grasshopper, Bulldog and (current fave Greenhouse). Just want somewhere comfy to take refuge from the elements while we plan our next tram-related-near-death-experience. Anywhere with big comfy settees would be ESPECIALLY appealing.