First to say, the location of Pietro's apartment is absolutely amazing. 15 min walk to Navigli, 5 to Colonne di San Lorenzo, 15 min walk to Basilica di Sant'Ambrogio... Great. And just 4 Metro stations from Duomo, Scala and all the shops... The apartment is nice, roomy and clean. The street is love and loudly what was fairly mentioned in description. This might be the problem of you are planning to stay with children (which we avoided this time 😀).
The only negative is the loud tram that passes next to your window.
All in all, great flat, great communication with Pietro.