The existing shophouse structure — a narrow Bangkok commercial typology — becomes the project's primary design tool. By removing intermediate floors at the building's core, the design creates a full-height central void rising through all four levels. This void acts as a passive ventilation chimney: warm air rises and exits through the open top while cooler air is drawn in from the street-facing facade, reducing reliance on mechanical cooling. The same void channels indirect daylight deep into the plan, illuminating the coffee bar, co-working zones, and circulation without direct solar gain. Together, the void transforms a private interior into a pseudo-public space — visually connected to the street, thermally buffered by structure, and socially activated by the layered programme of coffee, books, and focused work above.