Hi BinSabai . Thanks to you I decided to go for it and your assessment was spot on.

Got a nice room on a higher floor, don't know how the regular rooms compare but it certainly is comfortable.

Club lounge is as you said spacious and never gets crowded.
Food tastes better than expected with a good mix of thai + other dishes, and the "happy hour" is generous.
Due to there being lots to visit, and eat, in BKK we are not going out of our way to hang in the lounge 3 times daily, but if we are already at the hotel at the right time it's a nice place to chill.

If you were a scrounger, you could totally survive off of this buffet comfortably for your whole stay

They do serve breakfast in the lounge as well, and quality is excellent. Here are a few pics of breakfast buffet + truffle omelete and phad phak









In other words, was it worth it? Yes! Made our stay a little more special.

Location is great and there is direct skywalk to metro. Disclaimer: There is a large congregation of ladies of the night as soon as you leave the front of the hotel in the evenings, on both sides, in case this makes anyone uncomfortable. (Or maybe, the opposite...)