I took the train first class. To me, that is the way to go overnight. It was over 17 hours, but it didn't feel like it. I had a compartment with a bed and a sink, plus an electrical outlet, all to myself. The only drawback was I got very little sleep because the motion and the people in the compartment next to me were watching a movie till midnight, but that is not the fault of the railway. Helpful and friendly staff.