Does anyone have a favorite??
http://www.bbarcodeitolomei.com Check out Tripadvisor reviews as well.
Nicolas Inn. http://www.nicolasinn.com/en
My wife and I spent 4 nights at the Hotel Ivanhoe a B&B. Small, inexpensive <100 euros, close to Cavour Metro station. It's far enough away from the termini to be quiet and less than 15 min. away.