If I could give less than a star, I would. The United terminal at Phoenix airport is a disaster, and we were looking for somewhere to get a sit-down breakfast. Typically I look at Yelp reviews first, and I should have, because a grab and go muffin would have been better than this shitshow.
The service was the worst I have seen - the waitress who seemed highly angry with the fact that we came in to the restaurant literally slammed down menus, water glasses (mine had a bug in it), and the yogurt/bagel that we ordered out of fear (after reading Yelp reviews once seated) that the service would be so slow we'd miss our plane.
Everything seemed dirty, and the servers all seemed to have no concept of how to treat customers or take pride in anything they were doing.
This was the first time in my life that I was tempted to not leave any tip at all (my conscience got the best of me), but in hindsight, I shouldn't have. Avoid this at all costs and just grab a muffin from the Coffee Bean. Not worth the hassle, not worth feeling like you did something wrong by sitting down somewhere.
Absolutely the worst. The owner/management should really be ashamed.