The breakfast at Cafe Azul is mediocre. Given the prices they charge, they can do much better. I've dined here several times over the years, and only because of the convenience -it's on the Marriott Mesa campus and I'm always here for a conference.
If you are going to have breakfast here, the buffet is the worst way to go. Order off the menu and you have a better meal. The only good thing about the buffet is the omelette counter.
But if you have a car, I recommend eating elsewhere.