Naples is fun lively and exciting. It’s a street food lovers delight and everything is so reasonalble. You will gain weight for sure. Reminds me of Osaka in Japan. Try a Margharita or Baba (rum cake) and down it with an apertivo
Before Naples, I stopped off in Pompeii and Herculaneum and Mt Vesuvius during 2 week trip to Southern italy during COVID. I also hit the Amalfi Coast, Matera and Rome. Matera is magical
for more travels, check out my website