This is the AF lounge, one of their best lounge in an outstation. J pax use the upper level of the lounge where there is a kind of restaurant. If you are on the late flight, you can benefit from the « night service » which consists of having in the lounge the same meal as the one served on board, to maximize sleep time during flight. Of course, for this, do not arrive too late in the lounge.
When you passed security, the AF lounge is on the extreme right of the terminal, near gate 1. Look in the wiki of the AF lounge master thread, there will be a link to a review of this lounge.