The Congress Park section provides the best access to Downtown Disney, but none of the sections are an overwhelming walk. The resort is really not as spread out as some have made it seem, IMHO (and, for the record, I don't own at SSR). My parents (67 and 75 yo) and I had no problem walking at the resort and we walked to and from just about every section in very short periods of time.
We walked to DTD following the path out of the Springs. When we walked back we just headed straight out of DTD to the entrance to SSR. It was a much closer walk to the Paddocks where we were staying.