Milan is not the best place in the world or in Europe for restaurants but we found this restaurant in the Naviglio area that I truly recommend because:
Great unpretentious Italian food (Pizza and Pastas) at reasonable cost. Great atmosphere and nice overall decoration. The Calzone Pizza was really very very good. The service is again unpretentious but very helpful.
Good also to go with kids. My best food experience in Milan and I visited around 10 restaurants while over there.