I really don't get the complaints here re: price. Not sure where you're going to find a luxury 800sqft suite in Tokyo at the price level of the Conrad's bay view suite, much less one that you can get upgraded to on an award stay.

EDIT TO ADD: Also, if actually paying for the suite, recommend checking FHR - often have 4th or even 3rd night free deals (although the property recently switched to make these not repeatable anymore), which can bring the price down to <$600/night all-in, plus the property credit of $100-125.