We stayed in the apartment for a night before flying home from Milan the next morning.
Nives arranged for her niece to let us in, since she was working, which was greatly appreciated. The neighborhood is pretty low-key. There's a busy cross street nearby, and a lot of ambulances driving past (I believe a main hospital is close too). There was a grocery store across the street that came in handy for grabbing a quick dinner.
The flat was clean and pretty spacious for two people. The yellow metro line was only about 5 minutes' walk away, and we were able to get to the Duomo in about 15-20 minutes. The real benefit for us was that her place is so close to Milano Centrale, where we arrived in Milan & caught a train to the Malpensa airport the next day. Nives was great about giving directions on how much a taxi would cost and even booked one in advance for us the morning we left.
The only complaint would be that it got kind of warm in the apartment with no A/C, but Nives has a large fan for your use, which helped a lot!