All week around you can go for lunches in one of the UNIL or EPFL cafeterias.
The Unithèque is located on the Unil campus and is popular among people working at the Cubotron. You can check out Unil's cafeterias daily menus here.
Alternatively, a number of self-service restaurants are available on the EPFL campus, more or less close to the Cubotron. These include normal cafeterias (here is a list) as well as sandwiches, burgers, burrito, sushi and pizza places. A list is provided on this page.
Dinners are also available in some of these cafeterias.
Every day, up to 6 food trucks are active next to the main EPFL square. Check out which ones are there today at this page.
You can find further information on this page.