We have spent 4 great days in this flat. The location is superb, as described: 2 minutes walk to the Pinacoteca Ambrosiana, less than 5 minutes walking distance from the Duomo, 10-15 minutes walk to the Castello Srorzesco and to the Da Vinci's Last supper. The Flat itself is very nice and cozy, with a nice view of the Milan's rooftops.
Ferdinand was very nice and helpful, and most importantly for us, had excellent recommendations for nearby restaurants. We will definitely be back on our next trip to Milan!