I'm with joaniebalony - the Hyatt Regency Club Floor room with Diamondhead view is best by far - no loud construction & dust & messes yoou have to walk through to get to your hotel, you don't have hoards of people crossing 'your' beach, wandering through the hotel, the last time I was at House Without a Key, I thought it had gotten very crowded & tacky - used to be so lovely. I like the Hyatt as it's in the center of things, the hotel actually starts on the 2nd floor & is not on beach hotel row, so you don't have tons of people wandering through. Renovated rooms are great, service is great, Regency Club is one of the best (& saves tons of $$ on food & drinks

).
She is right about the small pool & you are across the street from the beach, but there is nothing in front of you & gorgeous views from Diamondhead back to the hotel strip. Beach in front is fun with Waikiki beach boys & surfing lessons - great people watching. Or walk, further towards Diamondhead if you'd like a quieter beach.