I'm a grad student at Pitt, and I go here all the time. The Granola Works with Yogurt is generously portioned, filling, healthful, and dirt cheap- probably the best lunch under $5 in all of Oakland. For beverages (which I only rarely get), it's not spectacular, but it's worlds better than Pitt's cafe, Cathedral Coffee. The free wifi is also a nice bonus.
For 1-3 people grabbing beverages or something light, it's great, but I would not recommend this place for large groups for a meal. But it's a coffee shop, so you should probably know that already.