There is a casual bistro at the bottom of the hill from Monte Castello in an area called Madonna del Piano. This restaurant specializes in rectangular pizzas but has a little bit of everything. I’ve gone there for lunch and had some tasty salads, we love their fries and their pastas are decent too. This isn’t really gourmet food but if you don’t feel like cooking it’s great. The best thing we enjoy here is the gelato and so we sometimes stop in the afternoon on the way home from sightseeing.
It’s rarely that busy but if you can make a reservation they will have a nice table pre-set for you. It’s across from these small soccer fields where there are often tournaments you can watch while eating dinner. There is also a small playground for kids across the street.