I had a great stay at Monica's place. The room is lovely and large, as per the photos. The location is amazing - just around the corner from the Duomo and a short walk to the Ponte Vecchio.
The only downside was the Wifi wasn't working while I was there, which was a pain. It's also worth noting that the the room isn't 100% self-contained —
the private bathroom is just outside the room.
That being said, I'd still recommend staying here.