This is a decent Mexican restaurant. Nothing terrible. Nothing amazing.
I came in with my wife and we were seated quickly. Our server was nice enough, but obviously was running around to many different tables, so didn't have too much time for us.
All the food we tried was pretty consistently fine. We had the Chips & Salsa, Steak Quesadilla, and the Chicken Street Tacos. As a comparison, I would say that the food at Cien Agaves in South Scottsdale is better.
I would recommend trying Manuel's for Happy Hour. The food and drinks are fairly cheap during that time (3-6 M-F). Also, kids eat free on Wednesdays, so that's a good deal to be aware of as well.
Enjoy!