Rosario's place is great, neighboring the Castel dell'Ovo and the Piazza del Plebiscito!
But for us, what really made the difference was his kindness to point out in a map for us just everything nice from Napoli within 2km from his place, specially great places to visit, to eat and to spend time living the Napolitano way of life while having a ristretto (their typical coffee).
He was also kind to welcome us with delicious sfogliatelle! The place is big, clean and quiet, everything is new and comfortable!
We surely recommend this place for everyone that wishes to visit Napoli and have a true experience! Thanks for everything, Rosario!