It was an amazing stay and great hosts.
The flat is beautiful, well designed, and bigger than it seems in the photos. It offered a comfortable accommodation for a couple for over a month. It also had a few positive surprises that we weren't aware of when booking, like a small projector to watch movies on.
The area is the "true Napoli" - teaming with life. Noisy, but we loved it and we'll be certainly missing it now. Walking distance to great restaurants, pubs, or museums, with a really good pizzeria literally just downstairs from the flat.
We decided to do a little extra cleaning after we arrived, but it certainly didn't affect our overall 5/5 opinion about the hosts and the stay :)
Super highly recommended and lovely.