All depends on your family....
We had a SSR GV this past March. Two families - one with 4 and 6 six year old girls (first WDW trip) - the other with three teenagers (regular
DVC'rs).
We stayed in Congress Park and loved it...however, we didn't go to the Parks everyday and the main pool was closed for refurbishment.
Our kids had a great time in the Congress Park Quiet pool. When in a GV we like to use the kitchen etc and we barbecued regularly at the pavilion by the pool, often bringing snacks and drinks down there. The little ones can swim or play on the play equipment while the adults are socializing. As well, one or more of the teenagers took one or both the little girls for walks to DTD and some special alone time. Teenagers also took the young ones down to the Community Hall for activities.
It worked for us because the teenagers were there to help, as well the Congress park pool was relativiely empty and the kids felt like they had the pool to themselves. For the little ones this was a real treat.
We love the Congress Park area and were glad this worked out. WE are not real fans of the themed pools as our kids are older and we feel "done" with that.
I always look at it from the point that we have a great quiet pool area very close by. Occasional trips to the big pool are not impossible but become the treat rather than the norm. For us this suits both the adults and the kids.