We had a good stay at Rosas place. As described, the location is pretty good.
It‘s a 25min walk to the centre of the city, a five min walk to the pizza place from „Eat, Pray,Love“ where they have amazing pizza. The apartment itself was very clean. Tho the narrow street where the Apartment is located at least seems a bit sketchy and it‘s quite dirty outside, as is most of Naples.
That being said, my friends and I also would suggest to only rent the apartment with a close group of friends as it is very small and the bathroom has no window or soundproof door whatsoever. For us, it wasn‘t that big of a deal but I can imagine it can be for some. Because of that I for my part wouldn‘t recommend it to a couple because of that.
Now the last thing and the only real issue we had was the temperature. As we went to Naples in the winter season, it was pretty cold outside and unfortunately just as cold in the apartment. There was an AC but no heater. So just be prepared for that.
Other than that, we still had a good time and the hostess was very helpful and eager to help us or give recommendations if needed! Plus the price is very fair :)