Well, I will admit that I was wavering as to whether to eat here, but Elaine's review convinced me that it was worth a try.
I will admit that I was somewhat put off by the lacklustre exterior of the building, as well as the gift shop which sold what appeared to be dragon themed merchandise (ok, I'll admit that I was expecting kitschy bavarian souvenirs and German chocolate.....

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Also, note that the menu posted outside is only a small portion of the full menu on offer - a few times I walked on by as I didn't realize this.
I finally ended up eating a weekday lunch here last week, and let me just say...WOW. As you can tell, I am German, but not a huge fan of German food except for some dishes my mother and grandmother make (in fact, when I moved back to Bavaria the first words out of my mother's mouth were 'but what are you going to EAT?!' and she asks the same question every time I vacation there)
The menu is actually quite varied and authentic, offering dishes for various corners of the country. But of course, the proof is in the pudding, so to speak!
I ordered a rather odd combination of a Pretzel and Flammenchevre. Both were delivered together, most likely as my server had no idea how I wanted to eat the items (ie which was the appetizer)
The pretzel was very authentic; not too hard, not too soft. And the house specialty mustard - WELL! I don't normally eat mustard and don't like it on my pretzel, but this was a sweetish mustard which was amazing. I rate the pretzel and mustard 9 out of 10.
The Flammenchevre was similarly good - piping hot, thin and crispy, and very tasty. (For those who don't know, it's a sort of ethnic pizza, with a thin crispy pancake like crust, goat cheese and a few veggies on top) I don't like American style pizza and often crave this type of dish. Sometimes pesto and garlic can make it too salty, but the combination was just right. The Flammenchevre gets a 9.5 out of 10.
I didn't have room for dessert, sadly, but as I had hoped to find Kaiserschmarren on the menu but didn't, it wasn't a great hardship (I think that they make some form of ice cream sundae which uses the pancake dough, but since I don't eat ice cream I chose to pass on this option)
Service was minimal. I can honestly say that the food was 'plunked' down on the tables, both by the servers and the manager (who was actually working very hard on the floor that day). I did not have the usual Bierstein with cutlery on my table; the Italian gentleman at the next table was very amused by my servers gruff delivery of the food, and my attempt to find cutlery with no assistance from the staff. I think that the servers here don't speak much other than French, and while my French is very good they had no interest in conversing with me or any of the other guests that I could tell. Not bad service, just indifferent, and not bad enough to impact the meal.
Most of the diners were Italian; there was one British family near me (looking for fish and chips

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The restaurant is a large open area on two levels; restrooms are on the 2nd level. I can imagine that it does get quite noisy as even 1/3 full it was noisy during the lunch service. Ambience gets a 6/10 from me - a little kitschy and noisy, but not unlike many places you will find in Bavaria in tourist areas.
Overall, this was a very enjoyable experience and I will definitely return!