Raffaella's place is totally recommended. It is located very close (within walking distance) to all the lovely parts of the old town and the piazzas. At the same time it is at a quiet corner. Me and my wife spent 2 nights there during the Easter time when the city was flooded by tourists, but there was no noise inside. The house was clean and equipped with the basic appliances you need for daily use. And Raffaella herself is a very nice and welcoming person.