A beautiful and very clean appartment at a great location. Everything is within walking distance and there is a nice pastry shop nearby where you can buy delicious espresso/cappuccino and pastries (Sapori Di Sicilia). Alessandro is skillful taxi driver and a good host; he put some water for us in the fridge. The bathroom was also very clean and has a nice shower.
It can be noisy at night, so don't forget to bring some ear plugs with you!
I would recommend Alessandro's apparment if you want to discover Naples in a couple of days.