Just book this place. Federica is an amazing host, and her apartment is just exceptional. It's very functional, very stylish, well equipped, and cozy. Everything in every room works great, nothing is missing, and the stylishness of it makes it a fun place to be. Having spent a fair amount of time in Milan, it's the best Airbnb option we found in all our time there.
The building itself is quiet and has a nice courtyard, which was really great for an impromptu game of fetch with our dog, and it made the entire stay feel very safe and relaxing.
The location isn't particularly central, but there is a tram stop probably fifty meters down the street from the building door, and e-mobility (e.g., Jump bikes, Lime scooters) radius stops one block away, so getting into the central part of the city is a relative breeze. On top of that, there is a grocery store <10 minutes' walk from the apartment, a huge Esselunga (a true supermarket) <5 minutes' drive up the road, a pharmacy just across the street, and a handful of bakeries and smaller shops all within a few minutes' walk. For quick-access food, there is a pizzeria literally just outside the building (think less than 3 steps) that makes some of the best pizza that we had in all our time in Italy, and there is a very cozy restaurant at the end of the block (to the north) that is both casual and delicious. For those that may be traveling with pets, there is a park <10 minutes' walk away that has two different dog parks. The only slight challenge in this place is parking - it's limited to what you can find on the street, which can be a bit challenging, but in the end we always found a spot somewhat close and often ended up in front of the building itself.
Beyond all of the above, Federica is just an amazing host - among the best I've encountered. She's amazingly responsive and will really help make your stay easier in a lot of ways. I can't commend her enough.