In Orsay, in the lab, we do have a small kitchen and a great balcony where we can have lunch if you bring your own lunch box. 

We are 500 m away from downtown Orsay, so you can also go there to buy your lunch and come back in the lab to have it.

You may prefer going to the University Restaurant in Orsay, which is located in building 230 on the Campus (300 m from the lab). You will need to fill a form to get an access card. You can find that form and related information here.