Marco is a very easygoing guy, that openly shared his appartment with us without any limitations.
We enjoyed our stay and saw many great places in Milan. Plus is, that not far from the appartment are shops and even some great restaurants.
If you dont mind walking, you can enjoy nice 20 min walk from Marcos place to center without even using any public transport.
Wouldn´t recomend the room in winter to people, that get cold easily though. The guest room is the coldest in the whole flat and doesnt warm up even if you set up the thermoregulator, so unfortunately, I ended up getting a flu during the trip.
So I would say either gear up with warm pyjamas, or visit Marco in the summer :)