We just got back from the Poly and had an awesome view across the lake to the castle. Keep in mind though that the castle is about a mile away, but at night it was beautiful.
We had room 3503, but 3501 to 3511 would be great rooms.....Those are third floor rooms with a full balcony. Corresponding first floor rooms with patios would be 1501-1511.
These rooms were in Hawaii, which are concierge rooms.
Other good views would be in Tahiti (long building) and Tuvalu (I think).