The ISO by Castle is a laid-back oceanfront boutique hotel in Kapa‘a, where the island, sky and ocean meet. Steps from the shore, it’s the perfect base to explore Kaua‘i, from Waimea Canyon to Hanalei Bay and nearby waterfalls. Start your day with complimentary Grab & Go Breakfast, then bike along the 7.3-mile Ke Ala Hele Makalae Coastal Trail. Unwind with morning yoga, afternoon swims, or stargazing by the firepit. Dine at The Bull Shed, Kaua‘i’s top-rated steak and seafood restaurant, featuring a full bar and live music. Experience true aloha charm in this peaceful seaside retreat.