Actually close to the Cavour train station if you know your way around. The ally can be confusing when you first see it but don't fool by it. The location is convenient just one stop from Napoli Centrale, easy transit to line 2.
The place is clean, clearly new furnished and included all necessities. Host is responsive and nice.
Honest opinion is the bed is squeaky and very soft. The toilet loud as thunder when it flush. No problem for me but my partner keep waking up because of this.
Overall still recommend it.