I'm a big fan of their beer selection. There are other places with more taps, but you'll find a high turnover here so every time you visit there's something you didn't see last time. It's a good mix of styles but sometimes it's all "strong ale" types. The bottle selection is also top notch. The price matches the product. Be prepared to shell out some cash, but it's a fair price for premium product.
The staff here is really hit or miss. Most of the time it's someone who's knowledgeable about their stock and attentive to their customers, but I've been there when the bartender spent literally 30 min talking to his friend without looking at another customer (guess no one else in the bar had enough hipster cred).
The place is small and cozy, but it's usually not too hard to find a few seats together. The music depends on the bartender; it can be soft in the background or cranked up high.
Overall, a very likeable place.