We really enjoyed our stay at Francesca's. The location is fantastic - pretty central and a great neighborhood that's not right in the thick of the the tourist traps - and she was a kind and generous host. She gave us many great recommendations for places to eat, and given that her apartment isn't in the most touristy of areas, there is a lot of good food at relatively good prices around.
In the evenings, everyone is out in the neighborhood, including the students, having a drink or eating dinner and it's very lively and makes for great people watching.
About the room, it's really quiet, on the top floor and not facing the street. The apartment is four flights up, and there is no elevator. Once inside you will need to navigate a spiral staircase to get to the room; so if your mobility isn't great it might not be a good choice. Also, as the posting indicates, there is no AC. It was mid-80s during our stay and it was warm, but we were ok with the fan. During the summer, it would be too hot for me.
I would recommend this place (outside of summer) and would definitely stay again.