We stayed here for 8 days in August 2019. Although the building exterior is a bit tired, the apartment itself is good with absolutely everything you need as if you were at home. It is small but we chose this over a hotel room which was much more expensive and much smaller. OK you don't get room service, hotel amenities and a cleaner every day but it feels like home from home and everything is well appointed. Being able to make frozen bottles of water each day was a god send.
The apartment comes with parking which is in an adjacent yard, you can also see the car from the apartment window. If you are renting a car (I should say if you are mad enough to want to drive in naples) then this is a must because someone will damage your car if you park it on the street. I don't think I saw a single car without a dent in it!
The local area Vomero is very lively but the best thing has to be the public transport links. From a few hundreds yards of the apartment you have several stations, Metro, and the Funicular which connect with central naples, the central Garibaldi station or west towards Pozzuoli. We ended up using public transport almost every day as it was so cheap and convenient. Vomero itself is an expensive place to eat and you'll find some much better places in the Spanish Quarter for example where you will pay half for pizza and beers. It's not unusual to have to pay €12 for a pint in Vomero. The restaurants themselves also vary greatly in quality, service and price.
The air conditioner in the apartment was a life saver. It was 34-36 most days and actually felt nearer 40-42 so it was essential in getting a good night sleep. The main bed was fine but the sofa bed possibly a little uncomfortable for anyone other than a child to sleep on. I would say it was more suitable for a family with children than 2 couples because there isn't much privacy as the apartment is open plan.
Elena was a great host, always stayed in contact and responded promptly with messages but we didn't have any issues on our stay. This place is perfect for exploring Naples, very central, very well connected and right in the heart of a bustling community with everything right on the doorstep. ATM's, Carrefours, Transport, Restaurants, Gelateria's, Cafe's and also plenty of historical stuff to look at like the castle etc. We were very happy with our stay.