Ah, you'd love Graffeo. Some of the best I've ear had.
http://www.graffeo.com
I think I may have been there once. I recall going into a coffee shop on that part of Columbus during the San Francisco Grand Prix (the bike race, that is). Of course, there are tons of coffee shops in Little Italy. I'll be sure to go there next time I'm in the City.
Generally though, I'm not a big fan of dark-roasted coffee.