Since the Flower & Garden Festival would be going on about that time, how about Yacht or Beach Club? I always think Animal Kingdom Lodge makes for a wonderful deluxe experience if you are interested in theming. The foliage and pool are lush and outstanding.
Of course, if I had the $$ for a poly, I'd stay there in a heart beat, too! I always end up preferring using the funds for more days elsewhere on property.
Dirk