We've stayed in every section at SSR, personally, our favs were The Paddock and Congress Park. My kids liked being right by a playground, especially at the Paddock when they could play while we waited for a bus.
Contrary to some opinions, we don't think there is a "bad" section to SSR - we like them all for different reasons.
As far as requesting, I usually ask for either The Paddock or Congress Park, and tell them why (playground, near a bus stop, quiet pool), and an upper floor, because my twins know how to unlock doors and will run out the porch door in a heartbeat.
Good luck and have fun!