I'll make this review quick, because I'm mostly echoing what other people have said.
We arrived on a Thursday night at about 5:15. We tried to go a bit early, since Una doesn't take reso's, and we wanted to have a quick meal. It's a good thing we showed up when we did, because the place was full (other than a couple of individual seats at the bar) by 5:30.
Their pizza toppings are very full of flavor and are served on a thin crunchy crust. We had a Prosciutto pizza which comes topped with fresh arugula - the prosciutto was thinly sliced and tasty, though slightly on the salty side. The arugula brings a freshness to the pizza as well as a nice balance to the prosciutto. We also had the Swiss Chard pizza, which is topped with a healthy dose of bacon (maybe healthy isn't quite the right word here... :-). This one packs a bacon-y punch and is quite a bit heavier than the Prosciutto pizza. If you are a bacon lover though, it is a good pick.
The service was friendly and prompt! I'd like to return to try some of the other types of pizza, as well as some of the non-pizza options.