The JW Marriott Ihilani Resort and Spa at Ko Olina is O'ahu's top resort. Luxurious spa, full marina, championship golf & the island's most impressive indoor & outdoor event facilities. Spacious, elegant guest rooms & suites, most with ocean views., The Ko Olina Golf Course will be closed for aeration September 22, 2008. The course will be offering a special aeration rate due to course condition until September 29, 2008.