+1 from me:
Cafe de Wildeman; About 1/2 a K from centraal station and also the Windmill Brewey' "Brwery T'IJ" I think its called.
If Amsterdam hotels are too expensive then consider Leiden - On main Rotterdam, Leiden, Schipol, Ams Centraal train line.
I lived and worked in Leiden for a good few years ( also Ams! ) and was on expenses!!
[In those days I could submit a receipt on the back of a Heino beer mat as one side was white!!]
Will boooore the socks off you at the next meet of the North County Brewers in the Old Boro!!
April 16 th if anyone fancies tagging along to a north side tasting