I went with my wife and her friend to spend a restaurant.com coupon. I'm going to only comment on my food because I really didn't try theirs, although they seemed to enjoy it so they may rate it higher.
Why 3 stars? 3 reasons: the service and my pho.
I ordered pho tai (rare beef) and was pretty disappointed with the results. Between having a Vietnamese wife and eating at so many pho restaurants I've probably tried more than 30-40 different variations of pho, so I at least have a reasonable idea of the quality. There were certain herbs that did not come out with the pho that bothered me. Also, it was by far the oiliest broth I have ever eaten. To be fair the flavor of the broth was above average.
In reference to the service, I'm used to Little Saigon where the service is very rushed and short with the customers, but this isn't Little Saigon. This is one of very few Vietnamese restaurants in Arizona let alone Mesa. The servers disappeared for much of the meal and the method of payment wasn't clear in the slightest. Once again to be fair the server was very polite when he did come up to us. I don't expect them to be hovering over us every second of the meal, but with only a couple of other people in the entire small restaurant they should be in reasonable earshot.
Overall, I personally didn't enjoy it very much but my wife and her friend enjoyed their food, which is why it's not 2 stars.