If I am remembering correctly, there are four deluxe rooms on every floor. We have had a queen deluxe before; so I'm thinking two may be queen deluxes and two may be king deluxes? Hopefully someone can confirm this info.
We stayed at a queen deluxe on the 6th Floor in June. It was great!
As far as heights, there is no balconies at HRH so once you are in your room, you don't know how high up you are. You can also close the curtains if looking out the window is too scary due to the height.
We just asked for a queen deluxe room that was non-smoking and non-pet and got the 6th Floor.