We've stayed at the Westin and Sheraton. Without children, I much prefer the Sheraton. The Westin has a great pool area, but that's about all it has going for it. The rooms are smaller than the Sheraton, and I can't stand time share solicitations. The only thing worse than the Westin is the Hilton Hawaiian Village in O'ahu. They hit you in every direction with their timeshare nonsense. The only plus with Hilton are the elite benefits (including breakfast, which was pricey at the Sheraton).