Sleeper trains can save you time and money, but of the ones I’ve had the opportunity to try, the most that can be said about their comfort level is that they’re tolerable. I’ve been on one of the top bunks of a 6-couchette compartment and I can tell you it’s no fun not being able to sit upright and sleeping with the ceiling barely a foot above my nose.
The Caledonian Sleeper, the overnight train service between London and Scotland, is by far the most luxurious sleeper I’ve ever been on. My sister and I took it both ways — from London to Inverness, and from Fort William back to London. (The photo above was taken at Fort William.)
On the Caledonian Sleeper, you actually feel kind of pampered. There’s a steward who comes to your compartment and orients you if it’s your first time on the sleeper. He also asks you what time you would be like to woken up, what drink you would like to have in the morning, and whether or not you want breakfast.