QUELL. Viennese/Austrian, 1 portion 7 - 12 EUR. Open Mon-Friday 11am - midnight, CLOSED weekends and holidays.This place is 100 years old - and they cook like it! Honest Austrian food that makes locals think of Grandma. Forget international influence, forget organic - but if you’re vegetarian, have no fear: The options are sparse but yummy! And the staff is genuinely friendly.