only 2 miles hiking to reach

Hanakapiai Beach, at Na Pali Coast. No need to do the full trail. Friends did it last year, daytrip.

http://www.kauaidiscovery.com/virtual_kauai_tour/hanalei+princeville+kilauea/page3/

Road to Hanna - the southside goes thru some unpaved road and very low bridges - again, depends on weather - not always a subcompact can navigate that, only after several weeks of dryness.