At the Sheraton Gateway Hotel, we had a very comfortable bed with lots of big, firm pillows, and the room itself was quite nice. There was a fitness center with a swimming pool and treadmills that was accessible by swipe card.
The higher price of having a hotel right next to the airport proved its worth, literally a two-minute walk from the hotel lobby to the airport terminal 3 via the overhead walkway ramp. No worries about traffic delays getting to the airport, only oversleeping. Even that isn't a real problem, because the hotel offers wake-up service.