The typical student lifestyle, I'd say. 20m^2 room 5-10km from the city center with combined toilet+shower and internet flatrate.

In Poland you could rent a studio apartment for 1/3 of McDonalds fulltime initial salary. The other 1/3 should be sufficient for food if you cook yourself.

I don't know about flipping burgers or all of Europe, but entry-level pay at Aldi in Switzerland is around $65k USD.