Apartment 45 is a minimalist residential interior located in Athens, Greece, designed by studioentropia architects. The challenge at the heart of this project is one that defines a large share of contemporary urban living – how to make 45 square meters feel genuinely spacious rather than merely tolerable. Where many compact renovation strategies default to light colors and mirrors as cosmetic fixes, studioentropia treats the problem architecturally, deploying a suite of perceptual techniques that operate on the eye and the mind simultaneously.

The organizing move is a central inox-clad volume running along the lateral axis of the plan. This metallic core consolidates the bathroom and kitchen into a single structural spine, freeing the surrounding floor area from the clutter of traditional wet-zone partitions. The choice of inox – brushed stainless steel with its anisotropic reflective surface – does more than signal a material preference. Positioned to receive daylight from the apartment’s openings, the cladding acts as a passive light distributor, bouncing and scattering brightness into the plan’s deeper recesses where windows cannot reach. It is a move with clear precedents in the work of architects like Herzog & de Meuron, who have long understood reflective metal cladding as a way to dissolve the apparent mass of a surface while multiplying spatial experience.

The mirrored pivot door introduces a second register of spatial intelligence. When open, the apartment reads as a continuous open-plan field – a single unified volume with unobstructed transversal views. When closed, it subdivides the plan into two zones while simultaneously reflecting the surrounding interior and the cityscape beyond, producing the paradox of a division that does not register as one. This reversible spatial logic belongs to a tradition of transformable domestic architecture that runs from the Japanese fusuma to contemporary micro-housing research, but studioentropia applies it with restraint rather than novelty – the device serves the apartment rather than announcing itself.