If you live in a house that measures just four feet wide, a single shopping trip to Costco could leave you feeling like a hoarder. That’s just one of the drawbacks to living in the world’s thinnest house, located between two buildings in Warsaw and designed by Polish architect Jakub Szczesny. The triangular shaped two-story is built with a light steel frame ten feet off the ground, containing a kitchenette (three feet wide) and airplane-sized bathroom, as well as a table for two and a bean bag sofa. According to Szczesny, the windows supply plenty of eastern light, with a semitransparent plastic roof providing a sense of space and additional light. A ladder leads to the second floor, which holds a table, chair and nearly double-sized bed. The house’s tenant is Israeli short story writer Etgar Keret, who’s accustomed to working within confined spaces. Check out more looks in the gallery below.