I ended up in the train station a few times and wowwww is this station massive! I mean, I should…read morehave expected it, seeing as how it's in a major city, but it's even bigger than you expect, especially when it's 6 am and you're trying to find a train.
Everyone who worked here that I encountered was super nice and helpful if I asked for directions. The bathrooms were really clean too, you have to pay 1€ to use them so have change or your credit card ready.
Also if you're American, prepare to go through security. I hadn't seen that before and for a moment worried I was in the wrong place instead of the train station, but nope, they just take precautions here.