Stadium itself is fine. Impressive structure and good atmosphere. But navigating it at crowded events is a nightmare. Just a few more (correct) signs directing people would be nice. Coming out from a concert here is confusing as you have no idea where you are in relation to the U-Bahn stations. We ended up walking around the stadium, climbing an embankment and then over a fence, just so we could get to somewhere we recognised. The fact that we weren't the only ones doing this says it all! We eventually found a route by following the crowds, but were asked several times by others if they were going the right way to which I could only reply, 'I hope so.' Getting into the stadium's not much better as the organisers set their own systems up which run contrary to the signs around the ground. We had a ticket for V Block, so followed the signs to V Block as logic would suggest. However, we ran into a wall of security staff who just told us to ignore the signs, turned us around and sent us the other longer way around the stadium through crowds of people coming the other way, probably going to U Block or somewhere similarly ridiculous. We've been here several times and still can't get our heads around the organisation!