We stayed at another one of Costanza's apartments nearby in Milan for just over a week and then entire experience was wonderful. In fact, we enjoyed it so much that we extended our stay an additional two days. The apartment was beautifully appointed with new appliances, television, etc. The kitchen area was small, but it provided us with everything we needed. And the sleeping accommodations were wonderful. The bedroom was incredibly spacious and offered a balcony as well. In addition, our kids slept on the futon-like piece of furniture that flattened into a bed. It was very comfortable.
Beyond the internal aspects, Costanza's apartment was very secure and in an exceptionally nice building. In addition, the metro stop was literally below the building, and we used the metro to get all over the city. It was so convenient and we took it to the Duomo, Castle, and even to see AC Milan play at the San Siro. But there are also many shops and restaurants close by, and we also explored on foot. One day, we walked to the Duomo (2 miles) and we walked to the train station--which is very close--even taking a nice day trip to Lake Como.
Lastly, Costanza was absolutely great, and this made a huge difference. Whether it was furnishing us with guides and info on Milan or answering any questions we might have had Costanza was always accessible and is a lovely person. Traveling abroad with our kids for the first time, this made all the difference.