The Amalfi coast is worth considering.
We stayed in Maiori on the coast. Little Italian resort/town. Fantastic pizza + seafood. People were lovely.
Places to visit:
Pompeii – Old. Tom Tom directed me into the back entrance onto the excavated roads.
Positano – Scenic town on a cliff. Just be careful where you park. They love parking tickets.
Ravello – Beautiful and peaceful when there are no coach parties.
Capri – Boat trip from Amalfi.
Sorrento – Shopping and sightseeing.
You fly into Naples and a car is a must. The driving is an experience.
Overall better for a couple than with kids.