For my money, if you're staying at the Hilton and have had your fill of German food, walk over to…read morethe entrance of Terminal 2 and get yourself a meal from Oliva (they have takeout or eat-in).
The beef and chicken are very tasty, and they don't skimp on the portions. Moreover, the bread is always warm and soft, and the ingredients are fresh and chilled.
Skip McDs and try this for a better quality, quick bite to eat!
Cheers!
RS