Excellent! I was at a private party in the lower level area so I can't comment on the ambiance in the rest of the restaurant but downstairs was pretty cool.
I knew this was a great restaurant when I ordered my first drink and was extremely surprised to find that they had Golden Draak on tap. If you don't know, Golden Draak (spelled differently with umlauts on the bottle) is a premium Belgian beer. I've never heard of it being on tap and it was oh so good.
The food was just simply excellent. My girlfriend didn't like the arugula salad but I think it's just because she doesn't like arugula. Probably not a good choice of a salad to get then. I thought it was very good and then we went on to the entree, which blew our mind. Because we were there for an event, we had a fixed menu. Everyone that selected the braised beef couldn't stop with the comments of "this is amazing!", "the beef is ridiculously good!", "can you believe how good this is?". Serious, it was that good. Really, really enjoyed it.
We then went on to a desert, which I had the tiramisu (good but not amazing) and my girlfriend's cheesecake (good).
Overall it was very very good and I would not only go again but recommend it to anyone looking for a fine dining experience.