One man’s trash bin is another man’s . . . apartment?

Polish architect Jakub Szczesny thought as much when he converted an alley once used for garbage into a 4-foot-wide home in Warsaw. Szczesny says it’s the world’s narrowest house.

Five years ago, he teamed up with Israeli writer Etgar Keret to design the two-story dwelling tucked into Warsaw’s historic Jewish neighborhood.

The minimalist pad contains a foldout twin bed, a desk, a mini kitchen and bathroom. They opened the space in 2012 as an artist’s retreat and named it “Keret House.”

“I started to think who could live there,” Szczesny told Dezeen. “It had to be a person that would like to be a hermit. Someone who would like to spend time alone doing something, but doing what?”

While the house isn’t intended to be a permanent home, it’s been used to house artists for up to 21 days at a time. So far, architect Yuri Avvakumov and journalist Irad Ben Isaak have made it their temporary home.

“It requires a sense of humor,” Szczesny continued, “as you cannot stay long in a place like this.”