I was there too just a couple of weeks ago. They are located on the eastern end of Pearl St (downtown), and , if you can find a spot, you can actually park in front of the pizzeria to give a little more specific info.
Boulder is a mecca for wood fired pizza it seems. I had one of the best I've ever had at Ladausio's. I'm such a newbie, it may not mean much, but from the first bite... and it was only $5 (Happy Hour Margherita, 3 til close)!