Preferred buildings are 1, 2, and 3. Blg. 3 is by far the largest. They are all closer to El Centro than other buildings but farther from the main pool area. No really bad locations here, but if you are in the farther end of #3 you will be closer to the first park bus stop pick up that is behind building 4. The last park bus stop is El Centro, sometimes the bus is a little full when it gets here, depends on the time of day and if a crowd just finished breakfast at Pepper Market (in El Centro) and is going to the parks.
Some locations on the upper floors of building 2 are further from elevators if that is an issue for you.