Building 85 and 90 are across the river from the main building with easy access to a bridge and adjacent to a quiet pool. Both these buildings are in the Mansions section of the resort. Building 90 would be slightly quicker, but building 85 is close to a bus stop. We found the Mansions to be a more quieter area than AB.
In regards to AB, I'd request building 14, 18 (not facing quiet pool), or 27 (most quiet of all 3.) We were in Building 26 on our last trip, and even though it was slightly more of a walk than we would have liked, it was centrally located between the west depot bus stop and the main building and VERY quiet. Our views were of a "pond" with some high brush and it was very relaxing. We had 2 quiet pools that were very close to us (not as close as the other buildings I mentioned above) but didn't have to worry about any pool noise.