When I did a summer eurailing it across Europe a million years ago, the overnight trains were a handy budget saver. Every few days take a train to whatever city

When I did a summer eurailing it across Europe a million years ago, the overnight trains were a handy budget saver. Every few days take a train to whatever city was an overnight journey away and save on lodging costs. Not the most organized way to travel, but it was fine when I was 20.