Castellammare, Marina di Stabia

Marina di Stabia sits right in the heart of Castellammare di Stabia, a town wedged between Naples and the Amalfi Coast with serious Roman history underfoot — ancient Stabiae is literally nearby. The marina is built to handle superyachts up to 250 meters, so infrastructure here is top-tier, with full services to match. It's got that rare mix of grand-scale facilities and an authentic Neapolitan working town around it, rather than a sanitized resort bubble.