How about Harry's, the quintessential Paris Bar. Check out
http://www.worldsbestbars.com/city/p...-bar-paris.htm which has bar reviews!
I sent my husband to Harry's while I shopped one afternoon, it turned out to be a good call. He was happy as a clam, in fact, when I showed up to get him he didn't want to leave.
Another great classic spot is the Hemingway Bar at the Ritz. See more info. at
http://www.worldsbestbars.com/city/p...-bar-paris.htm
You can research a number of Paris bars at the above website. Good luck with choosing!