We highly recommend Marco's place! :D Thanks to our host we spent 2 lovely days in Naples and Pompeii. Marco is a very caring person, so when he'd heard that we are planning to wander around with huge backpack, he provided us with a small pouch and a Pompeii map. He also told us what to see and where to eat in Naples and YOU SHOULD GO definitely were he recommends. Especially when it comes to baba - we tried it in few different places, and the one Marco advised was the best :).
The flat is really in the city center, so you can go almost everywhere by foot. Rooms are cosy, comfy and clean, living room and kitchen spacy and welcoming. Perfect place to stay :).