For what it is worth, I know a queen is a queen is a queen, but I bought a bed and mattress in Hong Kong, a Queen sized bed and frame (a Japanese frame, kind of low profile) and then brought it back to the US. I decided to swap it out with a nice Sealy Queen I bought in NY (800-mattresses I think) and lo and behold, the Hong Kong queen was 5 inches shorter than the American queen. Normally this doesn't really matter, but with the frame we had, there was simply no way to fit an American queen size mattress into a Hong Kong designed bed frame.
The mattress will more than likely fit in your room (if you have a small room you might touch the walls on three sides) but you may not be able to fit the mattress into a Hong Kong designed bed frame.
Was this a fluke? I don't know--I really haven't seen a site that says definitively an HK bed is X inches smaller than a US version (same size), but my own personal experience on this matter was kind of suprising.