We (family with 2 pre-teen boys) spent 1 week in Salvatore apartment. Everything was as described and the host responded quickly when needed. The apartment has a unique view. Especially for the firework on the 31.12. It was well heated and with everything needed in the kitchen for breakfast and simple dinner.
We were surprised to not find supermarket, but quickly discovered that everything was available in the small shops around (hot bread in the afternoon, fresh mandarins, cheese, soap, etc).
Easy access to the main train station for visiting Pompei and Vesuvuo.
The only problem was that we had a sms confirming that we can stay until 18h the last day, but when I arrived at 14h, I was asked to leave at 15h because other people were arriving. We could however leave the luggage at Salvatore apartment and try to dry, because the boys were completely wet, it rained the whole day.