This location is superb. Walking distance to many important sites. Bus stop and taxi hub is a 5 minute walk away. Every morning to mid afternoon the entire piazza is an open food market together with many all day indoor/outdoor dining options. Every evening local street musicians play into the night. The little apartment is situated off the piazza, so it's amazingly quiet. We heard the neighbors a bit, but not much and couldn't hear any of the evening activities at all.
Barbara is great. She met us at check in, gave great neighborhood recommendations, and checked in mid trip to ask if everything was okay. We had two requests she attended to right away.
One thing to expect is the building is very old and a bit quirky. There is only one window in the unit at the far end of the kitchen, and the entry area of the building is not too tidy.