A building that fits between two others
Tucked into an alley in Warsaw, the Keret House occupies a sliver of space that most people would walk past without a second thought. At its tightest point the structure is only 72 centimetres wide, roughly the span of an outstretched arm. At its most generous it reaches 122 centimetres. The total footprint covers approximately 150 square feet of ground that had sat unused between a post-war housing cooperative and a pre-war Jewish tenement building.
Architect Jakub Szczesny of the Polish firm Centrala conceived the project after noticing the gap on a walk through the neighbourhood. Rather than treating the void as dead space, he imagined a structure that would literally bridge the two existing buildings. Construction took three years and was completed in October 2012.
What is actually inside
Despite its extreme dimensions, the Keret House functions as a genuine residence and workspace. The building runs across three levels. Entry is at ground level, reached not from the main street but through an alley and up a set of steel stairs, with the door itself hidden behind a wall roughly six and a half feet high. The middle floor holds a kitchenette, bathroom, seating area, and workspace. A ladder leads up to the sleeping level above.
The interior includes a shower, toilet, mirror, and storage areas. A long skylight runs the length of the structure to bring in natural light, and the lighting fixtures are integrated into the building fabric rather than added on top, reinforcing a deliberate minimalism.
The house was created for Israeli author Etgar Keret, who uses it as both a workspace and an occasional residence.
Art installation or building?
The project's unusual nature created a regulatory puzzle. Warsaw authorities ultimately classified the Keret House as an art installation rather than a conventional building, a designation first reported by Houzz magazine. That classification reflects the genuine ambiguity of the project: it is simultaneously a functional dwelling and a conceptual statement about urban space.
The house has drawn steady international attention. Indian influencer Rishabh Wadhwa recently published a video tour of the interior, according to The Hans India, which first reported these details, showing viewers how each square centimetre has been assigned a purpose.
Why it matters for hosts
Independent accommodation operators in Warsaw, and in dense urban centres more broadly, can take a practical lesson from the Keret House. Underused or awkward spaces, whether a narrow courtyard annex, a converted storage room, or an attic with limited headroom, are not automatically unusable. The Keret House demonstrates that thoughtful design, good natural light, and deliberate storage planning can make a compact space genuinely liveable and, importantly, genuinely memorable for guests. A property that tells a clear spatial story tends to attract guests who seek character over square footage. Operators near Warsaw's historic centre, where pre-war and post-war building stock sit side by side, may find that leaning into the architectural history of a neighbourhood, rather than neutralising it, is itself a competitive advantage.
This post is published on the Qontaktly travel blog. Details about the Keret House were first reported by The Hans India.
First reported by thehansindia.com.