Officially, the 2 Fantasia buildings are listed as the preferred rooms, as they are closer to the pool.
However, I have heard some people say the Dalmatian and Toy Story buildings are also considered preferred as they are closer to Cinema Hall main lobby/food court building.
I will be requesting the Toy Story or Dalmatian building as the rooms near the pool seem they will be too noisy!
EDIT: Allears actually lists this: "Preferred rooms are located in the buildings closest to Cinema Hall: Toy Story, Fantasia, and 101 Dalmatians".
I know another website listed on the Fantasia.