For a Starbucks they are pretty good. I have camped out there for an hour or so to take advantage of the free Wi-Fi and have been pleased with how clean the place is and the level of service. When in need, I always pick it over the Panera which is close by because the Starbucks has many power outlets and the Panera only has one I can find.
Big downside to this location is that they have a bad parking lot. If you don't pay attention it would be easy to get into an accident there.