Wow, very nice location, and we where warmly welcomed by Giovanna. Yes, the location is so good that you can hear the people on the streets walking by Navigli, but when you close the doors it was fine to fall a sleep. When you sit on the balcony you have a nice overview. Metro and tram are very close, but a walk to the Duomo takes only 20 minutes, with a lot of sightseeing on the way.
About the apartment: Very nice and clean. Good bed and great kitchen. Everything you need. Only one tip for the owners: buy a shower door instead of a curtain. The showerfloor gets wet and the curtain is blowing into the shower when you are standing in the already small shower.
Overall a great experience and would recommend to anybody.