We were greeted at 9pm at night by Sibilla's lovely sister who handed us the keys and gave us a very thorough run through of the apartment. She also gave us some lovely restaurant recommendations for the neighborhood.
The apartment was spacious and warm. The beds are very comfortable. The location is flat-out amazing. It looks right out onto Piazza Duomo. If you are unfamiliar with the city, you couldn't find a better home base from which to explore the city. You're right in the middle of all of it.