I dunno, a giant green park within the city like SF's golden gate park or NYC's central park sounds really incredible.
I remember SLU in the 90's, it was shady and dying. But when I think about SLU today, and how close it is geographically to the heart of the city, it seems like such a lost opportunity that it's now just a sprawling office towers instead of something more vibrant. After 7pm, the whole area from Denny to Capitol Hill just shuts down.
Golden Gate is a little out of the way, Central Park is super accessible by subway.