On the right-hand corner where you see the roof lit all 'round with lights is a café called Au Clarion des Chasseurs.
Apparently, it's a spot associated with Hemingway, a place he liked to have coffee when up in Montmartre.

I had coffee there as well during my jaunt to find Amélie spots and various artist haunts during my April 2003 trip, my 3rd trip to Paris!