We've been invited to a family wedding in Naples, so we (parents + two young children) took the chance to spend a few days exploring the city. We rented one of the bigger units, while my parents took the small one. The kids had a blast being able to "visit" the grandparents across the landing. We really liked the flat and its location. All units are very new, sparkling clean and very tastefully decorated - think nice bathrooms with subway tiles, an hammock in the living room and cute comfy armchairs. Chiaia as a neighborhood was perfect for us, with its charming streets with lots of little restaurants, ice cream parlours and bars.
Our flat was facing the street, so there was a bit of noise from traffic and passers-by, but nothing too loud.