One of the better Pittsburgh coffeeshops, with a local, timeless feel. Sure, it's cash only, but the coffee is reasonably priced - most drinks are under $3. Plenty of table space and outlets, free wifi, and late hours (open til 11pm on weekdays, 12am on weekends), which makes it a great place to work - probably the best place to work in Squirrel Hill besides the public library. The patio is nice too (on nice days, at least).
No five stars because the coffee and sweet delights are not mind-blowing, but everything here is very solid. No complaints!