Hi,
My favorite place is at Howard Johnson's Jacuzzi. It doesn't seem like it, but you get a good view of the fireworks from the Jacuzzi (yes, while you are in it.). They also have a fireworks view room in building one, but alas this is a wee bit blocked by trees. I've had family stay there and the trees didn't bother, but to another friend, she felt gypped. I don't mind because I like building one (closer to snackage in the gift shop!).
I know the Hilton has DL view rooms, but I've only had a regular room there so I am not experienced enough to give an opinion. Also try the Hyatt, too. The Coast Hotel has DL view rooms, but I think they are down for refurbishment.