My perspective, I wouldn't bother with the HP Suk 24 unless price is your main concern. We visited the property to see if I might save some money by staying there, and quickly decided against ever staying there. I would say that if it were anything like a new build HP in the USA, I'd have stayed there but it's nothing like that. And you can read it's dedicated thread for the sad story on breakfast there and the other HP on Suk 1.
I'm a huge fan of the HR Bangkok Sukhumvit. I've stayed at the GH Earawan and I like the HR Bangkok Suk. a lot more, for location, breakfast and pretty much everything else.
GHE has a nice lounge, a bit nicer than the HR which is also nice. HR has the best breakfast by far, which you can tand should ake in the restaurant.
So there's a different perspective for you. I think I had 29 nights at the HR this stay.