Heiliggeiststraße 1, Munich, Germany
This place is in a lot of the major guide books for a reason: it's disturbingly, apologetically dingy. If you want to see a place that looks and feels authentic, then you might want to try this one on for size. It's a lively bar, cafe, and bistro. By lively, you should picture 20 people crammed into this small place with music blaring. When a non-local walks then, they are to be stared at continuously until they leave.
It could be good fun.