We stayed for a long weekend at Mattia's place, and we will stay again if we come back! Everything is as you see in the photos, it is located in a very nice zone, you are 3 min walking distance from the Metro station (which line takes you directly to the Duomo). It is very central and you can find markets, restaurants and stores around. The place is stylish, and you get breakfast and a bottle of water.
We would definitely come back if we are in Milan