I spent 2 nights in a 2 story, 100-square-foot tiny home in Germany that was smaller than any I've seen in the US

This cylindrical hotel in Germany comprises stand-alone tiny homes. It's the tiniest home I've ever stayed in, and it was full of space-saving hacks.

https://www.businessinsider.com/tiny-home-hotel-in-europe-photos-tour-inside-2023-2