Annalisa and Leonardo's place is comfortable, clean, and has a great location right across the plaza from the Mercato Centrale. Instructions for check-in were clear and easy to follow. They also had a great recommendations for local restaurants. It was also surprisingly quiet considering the business of the area below. I especially appreciated that they booked a taxi on my behalf to get me to the airport at 4:45 am for my early morning flight.
The one warning I would give to others considering this place is that the ceiling in the loft area where the bed is located is very low (though this is pretty obvious from the photos, so I wasn't surprised). I'm 5'8" and I bumped my head at least four times on one of the big beams over the bed until I got used to it being there. There was only a very small section of the loft under which I could stand up straight. If you are very tall, you may not be able to stand up straight at all. Most of time, though, I was only up there to sleep, so no big deal.