Brendan and I are mostly taking trains from place to place this summer. By far the most interesting leg will be from Amsterdam to Berlin.
It will be overnight.
We will arrive in Berlin at 4:30 AM.
4:30 in the morning in a strange city we can handle. Sleeping in the top row of a submarine like sleeping compartment (because, of course we got the top row)? That's another story.
More info about what we can expect on the train here.