For your excursions:
the historical center
in a few minutes walk you are at the historical center of Naples, with its ancient main roads called Decumani (San Gregorio armeno, Museo di San Gennaro), churches (the Duomo, San Lorenzo, Santa Chiara) and museums (National Museum, Museum MADRE ).
Capri, Ischia, Sorrento, Amalfi
in ten minutes, with one of the frequent bus or tram, you arrive at the marina to embark on modern ships and hydrofoils to Capri, Sorrento, Ischia.
Pompei, Ercolano, Vesuvio
With a Circumvesuviana train (station at 300 meters) you arrive in twenty minutes to the excavations of Pompeii and Herculaneum. If you continue on the same way you get to Sorrento, Amalfi and the entire coast