Esmeralda's house has everything you need for a nice stay in Naples. I and a group of colleagues spent 1 month there and it was a great experience. The communication with Esmeralda flowed smoothly, as well as the check-in and check-out procedure.
The apartment is wide, with lots of windows, good light and ventilation, and a lovely balcony with a side-view of the Vesuvius. The photos are very precise in terms of furniture and facilities.
The apartment is located in an authentic neighborhood, full of life. On a radius of 10 minutes walk, you can find many markets and restaurants. There is also a very close metro station and the historical center is reachable through a 25 minutes downhill walk.
I recommend this place to anyone who would like to spend a couple of weeks in Naples!