The night before a marathon

Okay the race day is important, but the night before is even more important.
If you travel to a big city and book a hotel room online, you don't know what you get.
In my case it was big hotel room in Berlin Köpenick. It was nice and but extreme loud. Berlin is a town that never sleeps. You hear tram, police, late arrivals, party guests and further traffic and if you aren't a stone you can skip the night. Without a good sleep in advance of marathon you can't expect a good time as finisher.
So I asked receptionist for a quite room, payed extra charge and got a small room in back of the hotel.
I slept the night before the race without interruption.
Next time I try to check the room location in advance. During booking you can also leave a note of your personal wish. Try to leave as little as possible to chance.