If you drive, I'd suggest doing as much of the trip as possible in daylight (i.e. before 4:30pm). Not only is the road scenic, but it's much easier to see the construction diversions, etc. during the day. I drove about half of the way in daylight and enjoyed that part of the trip more.

Another property to consider is the Hilton. It's located right next to the Westin, and while not luxurious in a "posh" way, the service was absolutley first class and the rooms were well appointed.