The JW Marriott Ihilani Resort & Spa, with 387 gorgeous guest rooms and 36 oversized suites, sits within the manicured 640-acres of Ko Olina.  Look for the four manmade lagoons here that offer fun and protected swimming. In 2007, Walt Disney Parks and Resorts announced plans that it will develop a Disney Vacation Club on its 21-acre oceanfront property at the Ko Olina Resort & Marina.