Hotel accommodation in Naples can be expensive, in particular if you choose one of the luxury hotels on the sea front. Three nice 4-star hotels with a good balance between quality and price are:
The former two feature a very convenient downtown location; the latter is less central, but offers a spectacular view over the bay and a beautiful roof garden where breakfast and meals are served.
A more modest (but decent and clean) 3-star hotel close to HTExplore and at walking distance from Naples ‘Campi Flegrei’ station is:
The number of B&Bs in Naples is rapidly increasing. Many are located in historical buildings of the old city center, and underwent extensive architect-designed renovations. In view of the highly dynamic character of these structures, searching the Web is the best option.
In all cases, early reservation is recommended.