Interesting, but this video should be taken with a grain of salt, I think. "99% of all Berliners love it !" probably should be given more exactly as, " ... of all former West-Berliners..." (I'm one of them), and even that figure would be grossly exagerated, to my opinion. And many of the former East-Berliners would have rather kept their beloved "Palast der Republik" (mentioned, too, in the video), and understandably not give a damn about it. Yes, it's big, it's futuristic, but to my experience, not "loved". Concerts there were avoided by many, because of the less, than ideal acoustics, and especially because of its lack of, or at least "cold and impersonal" atmosphere. Most of the big fairs and exhibitions were still held in the neighbouring fair halls, and only the "aftershow" meetings of the businessmen there actually were held in the ICC. And to most of them, the locations doesn't matter that much anyway ....