The apartment is fantastic. New, clean, walking distance to the duomo (about a 7 minute walk). It's on a quiet residential street away from the hotels and the food in the area is much better than in the very touristic areas. The whole city is walkable (even to the main train station).
Fabio is great. We came early and he was still cleaning the room so he gave us the keys and let us leave our luggage inside so we can start touring. It felt like I was staying at a hotel