On the corner of St.Mark's Place and 1st Avenue. Its heyday was a bit before my time, but I do remember going once or twice. Stones fans might recognize it as the bar Mick and Keef repair to in "Waiting on a Friend". There used to be a rather poorly rendered painting of them on the back wall. Don't look for it, it's long gone. The current incarnation is devoid of all semblance of character.
I do like the Union Jack shirt in the second floor window, though.