A friend and I went here for dinner on a Monday night based on the reviews, and I'm happy to report that we were both very happy.\n\nThe ambiance is pleasant and what one would expect from such a restaurant, although the location in the strip mall is not ideal.  The place is small, with a bit of outdoor seating.  We found when the restaurant filled up, it was a bit noisy--being seated by the kitchen did not help this--but we were still able to converse without much distraction. \n\nThe high point here is the food.  I've found authentic italian to be a rarity in the valley, and I very much enjoyed our meal.  I found the menu very pasta-heavy, but the selection was excellent.  If you like italian food even the slightest bit, I imagine you'll find something on their menu that you'll enjoy.  As for me, I had the lasagna, and it was excellent, and I would certainly order it again.  The gnocchi my friend had were delicious--clearly hand made.  When I return, I'll have high expectations for the food. \n\nService was attentive without being overbearing.  I found interacting with one of the owners quite pleasant--it's always a bonus to see an owner on the floor caring about your experience. Reservations are probably a good idea any night people might be out.  I was surprised to find the place fairly busy on a Monday.\n\nWell, I highly recommend Tesoro--I don't think I've had a better Italian meal in Phoenix.