This is one of our favorite places. We travel to Italy once or twice a year, and find the choices at L'Osteria to be authentic.
The bruschetta is incredible! A word of caution on the calamari: it's not battered and fried as most New Englanders are accustomed to; it's sauteed. Still good, just different than what you may expect. Any entree we've had has been wonderful.
Parking can sometimes be a problem, especially in the summer, but we've never had to walk more than a block.