I'm often in this area for work or tutoring and this Starbucks just happens to be on my way so I often stop for some caffeine courage. It has a very friendly staff and good chairs.
The downside is it is often very busy and its hard to find a place to sit down.
Also my pet peeve of people not paying and just sitting here seems to happen often, especially in the seats near the washroom, where the staff can't see!