> I’d arrive in a new city each morning feeling refreshed because of the train’s sleeping accommodations.

Oh man this has definitely not been my experience! Last I tried this I booked a "VIP" sleeper car with a private bathroom/shower, and it was anything but. The constant shaking of the train side to side coupled with a bunch of young American girls running up and down the halls screaming to each other all night meant I didn't get any sleep at all. To make things worse, the same girls making noise all night used up all the water, leaving me covered in soap with no way to rinse it off, and still 8+ hours until my hotel check-in. I can usually sleep anywhere regardless of noise or light or mattress quality, but sleeping a train is a new category of difficulty.