Floria's apartment in the center of the city is absolutely beautiful! Very clean, spacious, and has more than enough cooking supplies. You can see the Duomo from the hallway, and it's in a very convenient location. The street outside the widows can get a bit loud, but my fiancée and I were there over New Years Eve so that was expected.
Floria met us at the apartment and even left us a bottle of wine and a Christmas cake. Bring cozy socks as it can get chilly. There are tons of extra blankets, though!
100% recommend staying at Floria's Airbnb! We loved it.