The Centurion lounges as a collective group deserve 5+ stars for what they offer. Simply amazing oasis in a normally depressing arena of airport lounges in the United States for domestic travel/airlines.
I had a recent trip and arrived at the airport early just to spend enough time here. It's a great place to kill time waiting for a flight and during a layover. The decor is modern and in great condition. The quality of the full bar and the buffet blow the other airport lounges out of the water imo.
I was there around 2pm on a Tuesday and the lounge was pretty packed but managed to find a nice spot to set up camp. I love the personal cubicles/alcoves that have views of the tarmac. Perfect for plane spotting! The staff made a good effort to clean up as patrons left the lounge and were circulating to clear used plates constantly.
The lounge is located in Terminal 3 at the D gates (Across from D1) and can be accessed from the other terminal through the underground tram.