We had a wonderful time in Fabio's apartment. The place is really confortable and very well situated. You can visit everything by foot. Via Crociferi is 2 min walk and the Duomo, 10 min.
Pietro welcomed us perfectly and gave us a lot of useful advices about bars, restaurants and places to visit. We highly recommand to stay at Pietro's place. I'm sure you'll love it as we did :)