After wading through hotel lists for dozens of hotels (all with individual strengths and weaknesses), and hundreds of customer reviews, and comparing prices for various sorts of rooms to get a feeling for a price point I could accept, my top choice was a Junior Suite at the Laylow Autograph Collection property (Marriott). The public areas are in a modern style following a $60M "overhaul" in 2017, and the room is big. It's not right on the beach, but close, and I already had a membership in Marriot's membership program (named "Bonvoy").
At first, the room was offered on Marriott's web site at $280 per night (senior rate, 62+). The various travel sites (TripAdvisor, TravelZoo, Expedia, Orbitz, hotels dot com) were no cheaper. After several days, I decided to log in to Bonvoy and book the room, and the price had gone up that day to $299.
So, I booked it along with a second choice (not Marriott, smaller room, better view, $271). I eventually canceled the second choice, so I won't discuss it in detail.
I kept poking at the Marriott web site each day. If the price changed once, I at least wanted the satisfaction of seeing the price go up again while my booked rate stayed at $299. But, a few weeks later, the price dropped back to $288. I logged on to Bonvoy, edited my booking, rebooked the same Junior Suite room type, and my price did indeed drop back. To Marriott's credit, I didn't have to call a live person.
Then, a few weeks later the price dropped back to $271 (my first choice was then the same price as my second choice which never changed rates). I was again able to edit my booking and get the lower rate.
I cannot explain the reason for the rate changes except to guess that some algorithm alternately encourages and discourages customers like me. The $271 price appeared before the worst of the delta variant virus surge and has held for a few weeks. The arrival date for Waikiki is still almost three weeks away, so we'll see if we can squeeze a few more dollars out of Marriott.