We had a good stay at Rose's house. Rose & her family live in the apartment, so keep in mind that they are at home as well and that you will share the bathroom with the family. They couldn't really speak a lot of English but were always ready to help us out.
Breakfast was carefully prepared by Rose's husband, which was very sweet. They have a beautiful rooftop terrace where we enjoyed breakfast.
The apartment is a ~15min walk from the main station, and I'd say a 25min walk to the Piazza del Duomo.