Mario's place is a great location. On a main street with plenty of food and shopping nearby. A 15 to 20 minute walk in any direction will bring you to all the Milan attractions.
In terms of bedding and comfort, this place is a bit lacking. The washroom is small and the slanted roof makes entry to the washroom uncomfortable for even a short person. You'll need to duck into a doorway that is approx. 4 ft. The duvet also didnt have a cover but we were only there for 2 nights so didnt make a fuss.
Given the location of the apartment there is a significant amount of traffic noise from cars and trucks. Trucks were collecting garbage and recycling starting at 6am. It rained while we were there and since it is a loft and the bedroom is close to the roof it was quite hard to sleep with the sound of the rain storm.
I would still recommend this place for its location, friendliness of the host, and the price for a short stay.
Andrew