One highlight of my visit was the three-hour train journey I took from Clervaux, Luxembourg, to Brussels, Belgium, which cost $25. The interior of the train was clean, comfortable, and spacious.

First up, I spend $169 a night for a basic room at the Mercure across from the train station in the capital city, which also is called Luxembourg. Then I spend $4 on a cafe latte. And $5 on a bag ...