We stayed in Vesuvio room at Giovanni's place. The location is really good as it's close to the main train station - ideal for a trio to Pompei and Vesuvio. The room was clean and with a nice view of the volcano. The street underneath can be quite loud, so I recommend using earplugs for sleeping.
Overall, we really enjoyed our stay and I can only recommend. Giovanni's son Roberto helped us with every question we had and responded really fast.