It's basically our go to place whenever we're in Paris. It's conveniently located really close to Notre Dame in the Latin quarter. They offer a menu including a falafel pita with fries and a soda can with an "all-you-can-eat salad bar" as long as you're able to put it on you pita bread (you get no extra plate or something).
We went there twice last week and they did NOT open at 11:00 as stated on their website. They opened at 11:30 on both days.
Cons: incorrect opening times, small, no toilets