I booked an overnight train in an Amtrak bedroom, a private cabin with a full bathroom, and thought it didn't feel cramped for my 30-hour journey.

Depending on which accommodations you book, Amtrak’s Southwest Chief, which goes all the way to Chicago, can be more expensive than flying.

The "moving hotel room" on Amtrak sleeper cars has two beds, a couch, a private bathroom, a closet, a vanity, and extra amenities.

Insider's reporter spent 60 hours on overnight Amtrak trains and tried out two accommodations: a 20-square-foot roomette and a 40-square-foot bedroom.