In the Hilton Hawaiian Village I might take the Ali'i (a-lee-e, it means "nobility" in Hawaiian) over the Rainbow tower. The Ali'i is a boutique hotel within the HHV. It has its own check-in, its own private pool, private workout room. We like it (as much as one can like the HHV complex).   I agree with Princeton, do check prices at the Royal Hawaiian if you do pricing for the Rainbow Oceanfront or even Ali'i Oceanfront.