It is convenient because you can go directly from the Mergellina station in front of the hotel to Pompeii station.
Pompeii is remarkably well-preserved because it was buried in volcanic ash. It seems to have deteriorated considerably compared to when it was excavated, but even so, it is in very good condition as a Roman ruin, and it is much better than Rome.
Because it is the entire city, the site is too large.