What this place lacks in space and ambiance is more than made up for by the quality of the gelato. My friends who brought me here are Tuscon natives, and they had recently traveled to Italy- and they are convinced that the gelato at Allegro is better than half the gelato they had in Italy. The guy who owns this place got some kind of certification in Italy. A lot of the ingredients are sourced locally. Additionally, he doesn't make up batches and then add flavor. I don't think I've ever had stracciatella. Cinnamon and concord grape are also delicious. As other people have mentioned there are fun innovative flavors too, and the rotating cases and good service make trying different flavors a good part of the experience.
Not a ton of seating! But it's okay.