Don't know if the info is still needed but I've stayed there. It was during the summer for a wedding but it's a nice hotel. If I recall correctly, it's on the California side and sits about 10 feet from the Nevada state line. Because it's in CA, it doesn't have a casino but it does have a covered walkway over to Harrahs.
I haven't been there in years but I think this may be the hotel where the new gondola departs, so you wouldn't have to drive and park at Heavenly.