We are family of four who stayed in the quad room in June. We got lost coming from the train station and called the owner. (My husband speaks Italian, so I can't say for sure how much English is spoken). He came to get as at the Duomo and took us around the corner to the B & B. On the way he stopped at a church to show us a Carvaggio.
The Napolibed takes up one floor of an older building (no elevator) and overlooks the narrow streets of the historical zone.
Our room (the blue room) was very spacious, although the bathroom was very tiny. There was a small alcove accessed through french doors with two twin beds for our children. On the wall above the doorway in the children's area was an original fresco dating back from the 16th century. If I understood correctly, this part of the room used to be a balcony and the fresco was part of the exterior decor.
I did not find the room noisy at all. One of my children complained that the alcove was noisy. I slept there one night and found the sound did penetrate their window - which was a different type from the window in our room.
There is such an array of hotels and B & B's available in Naples. We chose Napolibed because as parents, we wanted to be near to our children, yet have a private space and we were happy with the layout of the room. As guests, you have use of the kitchen which is well stocked. We loved staying the historical centre and would recommend it to other families who are independent travellers on a budget.