La Piazza PHX is absolutely a solid Four Star experience.
We've been here many times for the pizza/ pasta and found it exceptionally good. Our benchmark for these wood fired Neapolitan places is the original Pomodoro on Scottsdale Road before they moved.
As the photo shows, they've earned the Verace Neapoletana Certificate and we can attest to its yummy goodness.
We've tried most things on the menu, from the pastas, to almost all the pizzas(photo) and desserts. We really haven't found anything that we would give less than Four Stars to. They're just solid.
About a year and a half ago Guy Fieri came through town and liked what he saw. On your way out you'll notice the DDD poster and his signature attached.
Now we've learned, that this isn't always a good housekeeping seal of approval, since he also likes Dives. But the food at la Piazza is good and we always come back whenever we're in downtown PHX. So enjoy!