I've stayed in all sections except Carousel. My least favorite is the Springs. It's the closest but the bus stop is crowded (so many people from other sections end up at that one because they walked to the store, etc).
Even from the far side of SSR, the longest walk to the main pool is about 10 minutes. The sidewalks are huge and easy to walk, even at night. Congress Park also offers about a 10 minute walk to DTD, plus great views, so that is probably my favorite. We've always liked the Paddock but haven't stayed there since the themed pool area is being built.
If you get a chance, try the table service there, Turf Club. It's quite good but because of it's location at this out of the way resort, it doesn't get a lot of mention. For a 1TS credit on the dining plan, it's quite a nice meal.