Just wanted to add a datapoint:

I stayed at Coex IC for 1 night (mid June 2010) and arriving at the hotel at 6am, they were not able to get me in a room until 9am. (I should have contacted them sooner?). My room was not very large, but nice enough.

I stayed at IC Grand (across the mall) 2 nights later (also for 1 night), and my room was huge. In fact, it was a suite. It was very nice. I assume I was upgraded. They did not tell me at check-in.

I am NOT RA. I am a lowly PLAT.