I travel to Jakarta (from Singapore) regularly (once or twice a month) so have had a chance to try out a number of the business hotels there .. and the Kemang Icon is by far and away the best.
Interesting 'designer' interior design - each room is different and interesting
Very very warm welcome and service ( The 'welcome home Mr McKee' as I arrive is a wonderful touch)
Free Internet in the room (and restaurant)
Lovely view from the rooftop bar/restaurant
Great 'Bose' sound system in every room
Provide an iPod stacked with cool music in every room
The restaurant has dipped in standard in the recent past (but I understand they are soon to renovate and upgrade the menu)
What I call (and enjoy) as intimate, some people may call dark - its a personal preference.
Not a 'family' hotel
If you want a vanilla ( you could be anywhere in the world) standardized product - go book a Hyatt/Shang etc
But if you want a delightful, memorable, remarkable stay (for business or as a couple) I would 100% recommend the Icon - mainly for the look and feel/interior design of the place/rooms, the warmth of the welcome and service.