I'm visiting SF for the first time since moving away almost 5 years ago...meeting some friends for Saturday Brunch around Union Square which is most convenient for all transportation-wise. Anyone have a good recommendation? I remember a couple of cafe/bistros off the north side of the Square to the west, but have no idea if they are still there. I see the Belden Place restaurants have been recommended and they look good too. Something nice but not too expensive would be ideal.