Help with a good coffee shop in Philly

[wpstafford]

I have a few hours to kill tomorrow in Philly. I'm looking for a comfortable coffee shop in the Logan Circle/Center City area.

Any recommendations? I don't mind walking a little.

Thanks for your help.

[rsgdmd]

La Columbe Torrefaction is at 130 S. 19th Street, a short walk from Logan Circle.