Los Suenos Marriott
Los Suenos Marriott a much better choice overall. Guanacaste is BORING and its a long drive to do anything.
Los Suenos is the fishing Capital of Costa Rica and you'll find the best Charter boats in all of CR there. as well as the 18 hole Los Suenos Golf course, Marina Village and more. Jaco Beach is just next door and the selection of tours/excursions, restaurants, shopping and nightlife is awesome!