I know Milan quite well because I studied at a university in Milan for a couple of years.
Dario's place is excellently positioned, it is well connected with all the areas in Milan, around the corner there is a metro station Amendola which is the main and oldest metro line, the so-called red line. You can quickly reach Duomo by metro or go for a nice 25 min walk to the center.
The apartment is located in a beautiful area near City Life which is one of the best areas in Milan to live.
You have Esselunga supermarket around the corner, and if u walk one corner more there is a City Life beautiful park and shopping mall where you can buy whatever you need. The neighborhood is also full of restaurants, in short, it is a top-notch area to live in Milan.
I stayed for a whole month with my girlfriend in the flat, the flat is not big but it's cozy and cute, full of books which gives it a nice charm, I would add that the bathroom is in fact bigger than it looks in pictures.
Dario itself was an amazing host, great at communication, and very helpful to us. Grazie!