I came in for late night cocktails and was blown away by the quality and the professionalism of the staff. The cocktails are very well-conceived and nothing you could expect to find anywhere else, and even their takes on classics go above and beyond. They have a wide selection of high-quality spirits, and the bartenders are very competent and willing to meet you where you're at. If you want to stick with a classic you know and love, they'll hit it out of the park. If you want to try something for the first time and just have them make something up, they'll hit it out of the park.
The only cautionary notes I would throw out is that the place is not a bargain, and it's a bit... fancy. I rode my bike in and felt pretty out of place in tennis shoes and jeans. (An important note, though, the bartenders were still more than friendly and professional.)
tl;dr Come here to experience fine cocktails in a classy setting made by friendly, savvy bartenders. And if you're gonna be fancy, get fancy.
Also! If you're a Bourbon Fan, they have a specialty cocktail that incorporates the smoke of pipe tobacco. My friends and I are still talking about it a week later!