I recently stayed here in the standard RA upgrade (cheapest to Club Studio). Agree that the room is ridiculously small, and the lack of a real desk makes working from the room uncomfortable and difficult. The elevators are very slow and leak water during hard rain.
The club lounge is open 24 hours, and is pretty nice, though the food offering in the evening leaves a lot to be desired.
It's also a huge hassle to get a taxi from here (and there is always a queue), so I recommend using Uber which worked well for me.