As for comfort level, this is the best airport hotel I've ever stayed. Room has extremely comfortable bed and not as dark as some reviewers said. (In fact, I personally like the one-wall dark blue look -- helps me sleep better.) Bathroom is clean, has both tub and shower, and a glass window for those who can't get away from the TV. Pool is nice to swim in too, but doesn't open long enough for those who arrive late to the hotel. Traveling independently, so no trouble or hassle with check-in. Conveniently located across the airport, free shuttle pickup with a quick 10-min shuttle ride (goes around the parking lot to get to hotel).
Downside is there's ABSOLUTELY nothing nearby, so everything at the hotel is expensive. Unless you have an early flight to catch or a layover and needed to catch some zzz's, take a taxi and stay in Bangkok instead.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.