We just returned from WDW, and since I stayed at about
6 different hotels while there for two weeks, I can give good advice on this subject.
I am a "princess in a pea" sleeper, and the beds at the Swan
were very nice, (especially while napping on top of the fluffy comforter, however, white and kids can be a bit dicerning).
I will say, however, that the bed had a tendency to "untuck and bunch" around the feet at night. I tend to like VERY tightly fitted bottom sheets. Our nights sleep were good though.
By contrast, I actually slept best on the bed at the Beach Club.
(I don't know why, but the rooms were also larger, and well layed out with fans above). The Animal Kingdom bed was ok, but my boys kept hitting their feet on end of the bed board. (No bottom bed board at Swan or Beach Club). The worst nights sleep were at the Ft. Wilderness Cabins. (The cabins were great, and I loved the cedar smell of the rooms, but they NEED to change mattresses there. My arms even fell asleep while on the Murphy Bed, and my kids hated the bunk beds as the top bunk is not high enough for someone (age 10) to sit up in bed (in bottom bunk) in morning without hitting their head.
So if you are looking, and the price is right, the Swan is definitely worth it. (Queen beds too vs. the smaller Double ones at the Dolphin) The Swan also seems alot less crowded than the Dolphin where my parents were staying - just a side note.
Celebrate Life