Grandstands near pool/bus stop was the best spot we've had at SSR so far, first bus stop, a moderately short walk to the boat to the center of Disney Springs, and a slightly shorter than that walk to the main building.
Never had any bus issues being at this stop which cannot be said for other stops at this resort, Congress Park bus transportation was atrocious when we went a few years ago, changing to grandstands and some improvements to disney transportation over the years have greatly improved this. The ONLY saving grace of Congress Park was the short walk to the marketplace side of Disney which also facilitated resort to resort transportation for Dinner reservations without a taxi/black car.
I would imagine the Springs is even worse off in regards to bus transportation as it's after Congress Park. However if you really spend a lot of time at the pool and are (far) more patient than I with regards to Disney Transportation's foibles than the Springs might be a good choice. The Grandstands pool is also pretty nice, not as good or as big as the main pool the main pool but it's still got its own bar/food.
I think Grandstands near pool/bus stop is a solid compromise for bus transportation, pool usage (closer access to both larger pools), closeness to the lobby and closeness to the boats for Disney Springs. We found it nice taking the boat as we could pick one morning or evening to do one half of Disney Springs on a morning or evening and save the rest for another day of the trip.