I also vote for JW Marriott in KL. Stayed there May 01 and rooms are fabulous. Great area with theatre's, shopping nearby. But request a non-connecting room. I got stuck in one that had french doors between the rooms and about an inch gap from the bottom of the door to the hardwood floor, so heard everything until all hours from the Japanese businessmen who were camped out next door. Loved the ESPN to keep up with N.America sports scene too.
Enjoy KL