i travel a lot for business and stayed at some of the better hotels, this hotel ranks mid-high on my list. the rooms were clean and modern, front-desk service was friendly.
on the down side that they were not able to give me a late checkout (asked to stay till 1 pm instead the usual noon). their justification was that someone else was checking into this room. if you are a truly 5 star hotel you would find a solution. mattress was a little to firm for my liking (and i like firm) and you need to walk a little bit to get to restaurants (siam or national stadium).