The building is currently under construction and definitely hard to navigate if you don't speak…read moreSpanish. Part of the issue is that there are multiple train companies and they are not easily identified. We waited in line 3 times.. and each one was the wrong one. But 4th time was the charm.

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.