Great Airport Hotel
Had a wonderful stay at this hotel. This hotel is located in terminal D at DFW. It's literally inside terminal D, you walk into terminal D, you can walk towards the left for the TSA security checkpoint or walk towards the right for the hotel.
My flight arrived at around 11am at terminal E. I had no problems taking a free airport shuttle to terminal D. Asked the front desk if I can check in early and the friendly clerk said no problem.
As an aviation enthusiast, I was delighted to get a room facing the runways. The room was very clean and modern. Big bathroom with separate bath and shower. Samsung LCD TV, ipod docking station/alarm clock, wireless internet ($10 for 24hr block), and new workout equipment at the gym.
I believe the sound proofing in the room was adequate. American Airlines is the major carrier at DFW, and American flies alot of the older/noisy MD-80s. But I still did not awake in the middle of the night by engine noise.
I rented a car at the airport. Parking is free for hotel guest, you have to get a voucher from the front desk every day. However, I learned later that airport rental cars can enter in/out and park at DFW for free.
Overall, I enjoyed my stay at the Grand Hyatt DFW and would recommend it to my family and friends.