Don't take this the wrong way, I really do like this place. My only problem with it is that I get a distinct sense of insincerity from it. See, it's called "Unlimited Coffee". Key word being 'unlimited'. The first refill is free, sure. The second? $0.50. The next refill? NO! You gotta buy a whole new cup!
And I realize very few people actually drink that much coffee in one sitting. And I realize truly unlimited coffee from a place isn't a financially viable option. But damn it all! I'm a medical student! I'm poor as hell and need a lot of caffeine!
Seriously though, the coffee here is quite good. There aren't a lot of places in the area that sell really good coffee. It's also open until midnight every day and they have a lot of plugs. Toss in the free wifi and you've got a solid study location. It seems like a solid place to kick back and relax (at least I assume it is, I've forgot how to do such myself, but many others there seemed to be happy).