My girlfriend and I stayed for one night. We arrived at 7pm (before the 8pm charge of 25 euros) where Elizabeth kindly met us. She was helpful with suggesting some local places to eat and drink.
The apartment is quite well equipped. It would suit a couple. I find the area of Naples to be a bit mixed at times, be sure to be alert.
But we are well travelled so it doesn't bother us. She also gave us great tips on where to park our car only 5 mins away. It was a trusted commercial car park, very professional. Be careful for criminals who try to get you to park in unauthorised parking lots, one man led us to one, before it was obvious it was a scam. Just listen to her!
As a side note, as I am tall 1.90cm or 6'3 I found I had to be very careful around the upstairs and in the bathroom. Tall people may find it a bit annoying. I couldn't stand up completely upstairs. But most people are not my height, so you shouldn't have a problem.
Cute place to stay, close to some lively spots. Get on it! Ciao