The problem is it's more about the design of the breakfast area (for that is what it is at HIX Zurich Airport, it's not a separate dining room) where people are continually bumping into each other. I find that seriously annoying at breakfast time as I like to have a quiet breakfast and not deal with people milling around. So much so that I've walked out of many a HIX breakfast area/room. I prefer hotels where the breakfast has to be paid for, it cuts down on the milling masses. Other than that, the HIX Zurich is really good, better than most European HIX properties.