You'll enjoy the Edgewater! I hope you got a room with a balcony. They have a nice restaurant, too, although last time we were there they didn't do room service. And re: my comment about seeing a "real" tree from your room at Cedarbrook, at the Edgewater, you'll see some very artistic fake trees..
And traffic shouldn't be too much of a problem leaving for the airport at 6 am.