Easily the best place in Köln for craft beer--a welcome addition to the scene. Note that this location has (15!) taps and is not a bottle shop (though they do sell some bottles).
Excellent choice of beers. Great for beer connoisseurs ! Lovely interiors. Tried a good tasting menu of 5*100 ml beers of my choice for 12.5 euros. Albeit beers were not very chilled.