Harrison's advertises themselves as a "wine bar", but its really just a bar. It is a bit unique in that is has couches and covered outdoor places where you can have some privacy. While they do have a lot of wines by the glass, if you're into Italian Reds you'll be disappointed.
If you're not a regular you might feel uncomfortable here. I ordered a couple of glasses of wine and they asked for my drivers license to make a photocopy. Instead of gave them a credit card, which required no ID at all. Kinda nutty if you ask me.
One thing that's entertaining about Harrison's is their web site; it's like your web site was in 1996. I'd almost forgotten how bad the WWW used to be.