Good location, though a bit far (by walk) from the Piazza Garibaldi if you're carrying luggage. Accessible by metro, however, which saves some time. The street can get pretty loud especially in the morning because it's near a main road.
The space itself is clean and well-decorated. You get your kitchen nook with a small refrigerator and stove. Having breakfast tickets was a nice touch, where you can buy croissants and coffee across the street.
The bathroom was rather small and it would have been nice to have more counter space, but not the worst.
Overall, not a bad place to stay while in Naples. The hosts were very accommodating, provided clear instructions, and recommendations for places to eat nearby. Would recommend!