Looks like a great summer hangout. Unfortunately, we went late on a cool Monday evening, so not exactly peak time. We went too late for the kitchen to be opened (and missed out on the free birthday item), and so I didn't look too hard for vegan items on the menu, but it looked heavy on sausages, so perhps not too promising.
I choose a dark German beer - Dunkel - but it proved to be pretty bad, and left a nasty aftertaste (dish water, anyone?) - not at all what I expected from a German, and for this reason I can only give it 3 stars. The birthday girl had a Manhattan, and that was much cheaper than you might pay elsewhere, so that was a surprise.
Would I go back? Probably, but I'd be trying a different beer for sure, perhaps the monthly special. But avoid the dark one.