We stayed at Irene's place for three nights. It is located in the heart of the Neapolitan shopping district, just behind Piazza del Plebiscito. The Metro stations Toledo and Municipio are about 5/7 minutes walk from the house but it's also easy to reach many attractions just by walk.
Via Chiaia is always busy and lively. We felt really safe even walking around in the late evening, there were always many tourists and locals around.
Irene is the best Airbnb host I've ever met, she welcomed us with a perfect Neapolitan coffee and left plenty of treats in the house for us (cookies and cereal for breakfast, iced tea, yogurt, fruit juices...)...we really felt like we were at home.
The house was clean and tidy, and it looks exactly like the pictures.
She provided all the bathroom supplies and the house is also equipped with two fans for the hot days. Irene also helped with tips and suggestions for our trip and since she lives right next door she was always on hand for any question.
We really enjoyed our stay, and will definitely come back.