I'm utterly shocked I haven't reviewed this place yet, especially since it's one of my favorite eateries in North America (that's right, I get to say that because this is an international review here).
***Look carefully for this place, there's no sign out front***
I apologize I can't remember the French names for all the dishes, but if you grab the English menu, refer to my recommendations below.
Best Dish: Veal Kidneys in Mustard Sauce (not mustard!!!)
Most Overrated Dish: Bone marrow...with salt! Ooooo, fancy.
Dish most likely to give you diabetes: A giant glazed puff of meringue. It might be worth it though.
Best Dessert: Baba Rhum. As an added bonus, this dish might get you drunk.
Another feature of this place is it's lack of pretentiousness. It's almost like a 40's diner. So sit back, have gurcken (they bring a jar full of gurckens to the table by the way), and enjoy.