As a vegetarian, I would have probably ranked this restaurant with four cows. But, as a vegan, because of the excessive use of dairy products (in a lot of dishes, even in the hummus!), I would rank this restaurant with three cows. However, I find this place more friendly than the one in Toulouse. Here, the staff is friendly and very helpful when you ask for vegan options. They won't charge you a dessert if you only take fruits when you're vegan. The place is quite nice and has a big terrace.
The restaurant offers unlimited hot and cold vegetarian buffet (including different pies), unlimited soup and unlimited dish of the day at a very reasonable price. However, vegan choices are not clearly indicated and some items are confusing (they do not indicate incorporating cream in their hummus), so do not hesitate to ask to be sure what is vegan or not. Sometimes, the dish of the day is vegan, and sometimes not. Pies are never vegan but if you're vegetarian, they looked good. For desserts, vegan choice is limited but they have some sorbets that seem vegan.
To conclude, go if you're vegetarian, give it a try if you're vegan. But needs more dairy free options to be really interesting for vegans.
Cons: few vegan choices, relatively basic, no-dairy & no-eggs not clearly indicated