P.S. I stopped by the nearby Cafe de la Paix, 5 Place de l'Opéra, 75009 for lunch based on a friend's recommendation. The Cafe de la Paix is part of the historic Hotel de la Paix (read more about it here). You can eat at the Cafe's more formal restaurant or in their more casual terrace. I recommend lunch in their terrace, but if you would like to try out the restaurant the Cafe does take online reservations (here).