We stayed at Riverside last year in the princess rooms, but found ourselves at French Quarter more than we ever thought we would. Yeah, we didn't stay in any rooms there, so I can't comment about that, but we did a lot of our eating, swimming, and transportation from there.
What we loved was:
1) The pool. Great themed, never crowded, and fun. My son (5) loved the kids splash area.
2) Coke freestyle machines.
3) How peaceful and quiet it was. Walking along the river and then through the building walkways was so enjoyable for us, my wife suggested that we stay here in the future.
4) The transportation. The boat to Disney Springs is the last to be picked up and the first to be dropped off. But for us, we boarded at Riverside, then waited, then it went to French Quarter, then waited, before heading over to DS. If we had just boarded at FQ, it would have saved us 15 minutes.
In regards to the busses, our 4 stop bus stop at Riverside was not cool. I often found myself saying "if we just stayed at FQ, we would be back in our room by now".
The only thing we didn't like, was how difficult it was for us to find chairs in the pool area. It was a struggle every time we went there.