Where are you heading to ?
What I do usually is ask the Bed & Breakfast/Hotel staff where you can eat well in the area. You can’t go wrong with this approach, as they’ll want you to be happy with their recommendation and also, as locals, they surely know where to go to or what to avoid.
Another good tip would be to chose the place that is bustling with Italians (local or not). They are more likely to make a better choice than a tourist that is for the first time in the area.