As that SideBar is located near my work, I've been stopping in for a drink more often. I keep going back for three reasons:
1) location, obviously. Plus, it's in a great spot even if you don't work a few blocks away.
2) The Sidebar Collins. They make their own mix and it makes all the difference.
3) The bartenders. They are super friendly, extremely helpful, and provide excellent recommendations.
Happy hour is the best time to stop by - $4 appetizers, $8 off bottles of wine and much cheaper cocktails. It gets pretty busy late at night, but that only makes for more interesting people to talk to!