I haven't experienced any of the service issues others have had here. I've simply enjoyed good coffee, decent food, ample available seating (at 4p on a weekday, though it did get a lot busier into the evening), free wifi, and plentiful people-watching (this is a popular spot, and I've seldom seen more pretty people in one cafe at any one time). All-in-all, it's definitely a place I'll be coming back to.
The only things I'll knock it for are being a little bit grubby (in particular, the coffee condiment counter was nasty the time I was there), and for not stocking any artificial sweeteners other than Sweet 'n Low (this is a pet peeve of mine).