I've been eating at Ottavio's since they opened, and can say without reservation that it is one of my all-time favorite places to eat. The environment is comfortable, the decor is charming, the service is friendly and relaxed, portions are very generous, and the food is incredible. It's hard to go wrong on the menu, but if you like things a little spicy, I recommend the Rigatoni fra Diavolo. Wickedly delicious. They've also got a live accordion player/singer on weekend evenings, which for some diners may dramatically enhance the ambience.
Pros: Food, Fra Diavolo, Foccacia