This is the first Centurion club that Amex rolled out a few years ago and is still the best IMHO, especially when compared to the SFO club which is perpetually overcrowded and other clubs at SEA and MIA which are pleasant but not as spacious and nice as this one.
I stopped by during a quiet period and had my pick of spaces inside the lounge, whether private "booths" that were perfect for one, lounge chairs, or a large wooden work table in the library-like room towards the rear. The food spread is modest but not bad, and, best of all, drinks at the full bar are free (although tips are appreciated).
The entire venue has a variety of spaces that are conducive to working or relaxing, and service here is impeccable. U.S. airlines, take note when it comes to beefing up your subpar lounges.