If you are looking for a clean place only a 5'-walk away from the city center and still relatively peaceful and in a nive neighbourhood, do not hesitate.
Wei is a warm and welcoming host and will make sure you have everything you need. (She doesn't live there, though, so if you are looking for an 'Italian home' experience, this isn't it.
Being so close to the center, the building is really peaceful. There's also some café's just underneath, though, so do bring earplugs if you are sensitive to noise. That said, I slept perfectly fine (the bed is very comfortable, by the way).
One thing: I didn't get the room in this ad. Mine was a bit smaller, darker and without a couch or balcony. If that matters to you, you should mention it beforehand, I guess.