We had a nice stay here. The place itself is fine--clean, plenty big, okay bed and furniture. It felt like maybe they missed the ordinary prep that would be done before someone comes (there were dishes in the dishwasher, only one roll of toilet paper, no top sheet on the bed), but Ginevra offered to help with that and none of it was a big deal.
This place is all about the location and the view, anyway. It's really quite special to overlook the piazza and the basilica. One of our favorite nights of our two weeks in Italy was spent on the balcony drinking wine and eating meats and cheeses we bought from a little shop nearby. And Ginevra provided a great list of recommendations--Il Santino for wine and aperitivo, and Ristorante del Fagioli were especially memorable.
Also, neither the noise from the piazza at night nor the stairs were a problem. Would stay again.