Bathtub Takes Center Stage: How Sigla Studio Redefined the Barcelona Apartment

In an innovative renovation of a 59-square-metre apartment in Barcelona’s Turó Park district, architecture practice Sigla Studio has boldly challenged traditional domestic boundaries. By installing a vibrant, green-tiled bathtub directly into the living room, the architects have created a 'continuous domestic landscape' that prioritizes light, fluidity, and open-plan living. This project moves away from the conventional compartmentalization of residential spaces, opting instead for a unified, versatile environment tailored to the needs of a single occupant. The design not only maximizes the perceived size of the compact apartment but also turns a utilitarian function into a sculptural, aesthetic centerpiece. By dissolving the walls that traditionally isolate the bathroom, Sigla Studio has highlighted a shifting trend in urban architecture toward more flexible, experimental, and deeply personal living spaces. This article explores the materiality, architectural strategy, and the evolving philosophy of solo-living, marking the apartment as a significant case study in modern, fluid interior design within the high-density context of Barcelona.