*Possibly dead*
$40/night - Double Ocean View Diamond Head. Free buffet breakfast, free cancellation. April 1-June 17 (price may vary slightly by date).
May or may not get cancelled, but with free cancellation, there's no reason not to give it a shot. Book now, think later - this one won't last.
https://www.hotelscombined.com/Hotel...Resort_Spa.htm
Note: on the final checkout screen, I did get a warning that there would be extra fees on arrival: a total of $7.48 for 5 days.
EDIT: There are reports of a $30/night resort fee that's not included in the price. Even at that price, it's still a steal, but keep it in mind.