I went here for a work Christmas party after wayyy too many brews at the Bier Markt so my memory might be a little rough.
However, I do remember Trevor being a lot of fun and the food being especially tasty. We sat down in the small lounge area at first and had some cocktails and appetizers. They had these mini hamburgers that were to die for and I remember the next day at the office everyone was still talking about them.
The restaurant itself is set in a basement but the area sprawls into several different seating areas. The restaurant feels very historic and brooding with lots of soft lighting. We sat in our own private nook, which makes it great for private functions.
The food was spectacular. I started with a lobster dish that was absolutely delicious. For my main course I had a tenderloin and whipped potatoes and they were both so tasty and filling. In fact everyone at my table raved about their food the whole night. For dessert I had some kind of dark chocolate ganache that I couldn't even finish because I was so stuffed from all the food (and booze).
The prices at Trevor are in line with most fine dining establishments, so it won't be a cheap date. However, their summerlicious/winterlicious menus feature some tasty meals and won't cost you quite as much. I highly recommend this restaurant for a nice date or anniversary!