I had a great time staying at Stefano's place. First off, he was super friendly and accommodating. All his suggestions were great, I managed to do almost all, but ran out of time.
His place is very clean and with a great location. Even though it's on the other side of the river from the downtown area of Florence, it's walking distance to it an many other great sites and restaurants. The bus and rail stops are nearby as well if you want get around town that way.
Would definitely stay here again!