Two week trip + one location - Location recommendations

Hi everyone,

My family and I are traveling to Greece next year at the start of May. Everyone in the group will be 30+ years old, so no children. We’re looking for recommendations on where to stay. We want to rent a villa for a single location and tack on 1-2 days in Athens before heading home at the end of the trip, so we aren’t super interested in island hopping. We want to experience some great food, beaches, do a boat charter or two, and mostly just relax.

Does anyone have places they would recommend staying for a little under two weeks? Right now, options we’ve looked into are Crete, Corfu, Paros, Kefalonia, and Lefkada.

Thanks!