I've just returned and all the food we had was pretty good. Counter service we ate in the Crown Coloney Plaza (1st floor) and Festhaus both were good quality "fast food" we also ate in the Crown Coloney restaurant ( on the top floor) this was a really nice "full service" experience, great view if you get a window seat ( looking over the Africa savannah) and good food at a reasonable price.
You can read my trip report for more information