Currently on my 16 night trip in SEA. Here's my upgrades:
GH Kuala Lumpur - Upgraded 4 Nights into Grand Suite, Cash stay @$85/night
PH Saigon - 8 Nights, 5 nights in King Garden view, then upgraded 3 nights to Park Suite after requesting. I knew there was Passion week during the beginning of my stay so hotel was sold out.
Used 2 1-4 CATs first 2 nights ($500+ per night on regular rate) then 6 nights cash @ $180/night.
PH Jakarta - 3 Nights upgraded to Park Suite Deluxe. Used points 39K (15K + 2 12K points)