I stayed at Davide's house for 4 nights and I can easily say he was a great host. His house is very clean and the room is quite spacious. It even has a nice balcony full of flowers. Also, Davide spares a big area in the closet for guests. He is very respectful to personal space and he is always very helpful with any questions you might ask. His house is 5-10 minutes walk from Duomo so it is very easy to get there. I enjoyed staying at Davide's house and I recommend both the host and the house.