Apartament was absolutely amazing !
It's a new place, modern, quiet and clean.
It's located 100 feet from via Toledo (main street of Naples with ton of shops, restaurants, pubs etc.) - you can get anywhere super fast from here - you will need maybe 2 minutes to get to Toledo Subway. (P.S Don't be afraid it's close to Quarteri Spagnoli, there is nothing to be worried about, location is super safe ! ).
Tips: Just one block away there is a local supermarket called "Conad", it has very decent prices. (Try to avoid carrefour express, it's pretty expensive).
There was 3 of us, and we had plenty of room for everything.
In general place was great. We really loved it.
P.S If anyone needs some tips how to get around Naples, feel free to message me, I would be happy to help :)