I found this place on AirBnb, and it was my best experience with that service ever. This place was…read moredownright cheap for what we got: clean, conveniently located, and stocked with all the amenities. Walking, it's 10 minutes from the train station, 10-15 min from downtown, and 20 min from an entrance to the ruins of Pompeii. It's located on a mostly residential street, near a couple other small BnBs. This one is apartment-style.
The owner is easy to contact, hospitable, and reasonably good at English. She made herself available, held our luggage after checkout, and gave great restaurant recommendations. She'll also let you practice (terrible) Italian if that's your goal. Few other people humored me like that!
The free breakfast provided is delicious, local, customizable, and filling. WiFi was fast and free. There were no weird hidden fees anywhere. What more do you want? Stay here!