Naples
Naples is a dense, loud, deeply layered city with the archaeological museum that holds everything removed from Pompeii, and the best food in the region at ordinary prices. It has the region’s main station and airport, which makes it the easiest arrival point. It is not a coastal holiday — the Amalfi villages are a train and a bus away, not a stroll.
A real city, museums and the best onward connections.
Dense and loud; the coast is a day trip, not a doorstep.