Italy Places to visit around Almafi that aren’t over crowded late June

Hi everyone! I’m planning a trip to Italy for late June and would love some advice from people who know the area well. We are a group of 4 (2 couples) and are in our late 20s.

We fly into Florence and fly out of Rome. We plan to train south to attend a wedding in Puglia. So, we’re looking for suggested places to stay for 5 nights in between Florence - Puglia. Right now I’m considering places like Sorrento, Procida, Ischia, and Salerno. Would love to be close to the ferry to see the Almafi Coast from the water. Also open to great hidden gems as well!

Here is a snapshot of our plan:

\-Florence/ Tuscany 3 nights
\-??? 5 nights
\-Fasano/Ostuni 3 nights
\-Rome 2 nights

We enjoy outdoor activities like hiking, boating, and beach hopping and hope to explore authentic restaurants and bars. All suggestions are welcome.

Thank you! (: