Always packed (part of the reason I like going) but difficult to find a table. Most people are working on a project (for school, work, ect) and I like that vibe when I need to get something done.
Coffee is decent, but although many would probably be offended that they even offer it, I like that I can just grab a large diet soda when I want it.
Furniture is often gunky and dirty (and sometimes the clientele is too.)