Teresa's place is hands down, the best apartment to explore the real Napoli. It's literally next to the Duomo and close to everything Napoli has to offer (especially food). The apartment has everything you need for your stay and even though we didn't end up cooking due to the choices Napoli has to offer, it would have been possible.
In addition to the apartment, Teresa is an incredible host who frequently checked on us by text message and offered good tips where to eat in Napoli (thanks for the Tandem Ragu tip).
I would definitely recommend the place + host to anyone visiting Napoli.
Incredible city,apartment and host.
Grazie mille!