Positano is the premiere location, but I liked Ravello too. Don't forget Capri, the island. There's accommodation by the harbour and then Upper capri, in the hinterland.
There are lots of ferries between Capri and Positano and Naples. Wherever you stay, a day trip to the others is worthwhile.
If you're in Positano, Little Red Fish beach and the D'Adolfo Restaurant are to die for. The boat with the little red fish symbol on the mast will pick you up and take you to the secluded beach. Book a table straight away and enjoy a great lunch before heading back to your accommodation. about 5 years ago
I just got back from studying in the town of Castellammare di Stabia for three months and can tell you that there are SEVERAL things to do! Using the Circumvesuviana, the local train that runs from Napoli to Sorrento is efficient- be aware of pick picketers!
Napoli is nice for history, pizza, and a central place for transportation. Sorrento is a wonderful town but if its out of your price range stay in towns like Castellammare and take the circumvesuviana to your destination! Climb to the top of mount Vesuvius, takes about 3 hours- take train to Ercolano Scavi- 10 euros! Capri is beautiful, the island of ischia has a natural park with hot springs to relax in all day, the island of Procida was my favorite with no tourists and beautiful beaches!
Ravello, Positino, Salerno, Almafi- all worth wild but a day trip will do!
Let me know if you need any cheap, fun ideas! As a college kid who lived there for a couple of months I'm chock full of them! Enjoy! about 5 years ago