To my bitter surprise, the beds in China and Korea are rock hard.  Note that I was staying at five star type hotels (Hyatt and Shangri-La) too.  I actually thought camping was more comfortable (yes I know that is hard to believe). 

I tried moving rooms but they indicated all their beds where the same.  Eeeks.  I ended up folding my comforter into a taco so I could sleep on top of it.