If you prefer to go to Naples and don't want to stay in the city, then Castellammare Di Stabia is an excellent choice if you plan to rent a car and drive to Naples, Sorrento, Positano, Amalfi, and the Amalfi coast in general, because it is right in the middle.
If you choose Castellammare Di Stabia then Miramare Hotel is the way to go. The staff makes you fell like home, extremely friendly and very kind. The establishment is brand new so you have to excuse some minor things missing (like WIFI in all rooms is not available, The Menus are not ready yet for room service and some other minor things) but the overall experience is excellent. The staff makes everything possible to accommodate you.
Very Clean, nice rooms with amazing views and right in from of the sea.
Nice swimming pool with hydro massage and other amenities that will make you enjoy every minute.
At night you can walk down the Corso Giuseppe Garibaldi which is very beautiful, have dinner in one of many really nice restaurants by the beach and blend with the local people.
Once again if you choose to stay at Castellammare Di Stabia, Miramare Hotel is the way to go.