The coffee quality isn't as good as some of the smaller cafes (eg Sam James), but it is still good, and much better than the chains (Starbucks, Timmies, etc).
Price is very reasonable... $3.5 for a large Americano (including tax), I also like how they steam the milk (I don't think that there's an extra charge for this). And I like that I can very easily specify how much milk to add.
It's a little tough to locate though, especially if you suck at navigating the PATH as I do.