In revamping their Paris duplex, designer Rafael de Cárdenas (on the right) and his partner, Cale Harrison, doubled down on the ascetic vibe of the modest space. <span style="font-family: Theinhardt, -apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;, Roboto, Oxygen-Sans, Ubuntu, Cantarell, &quot;Helvetica Neue&quot;, sans-serif;">The Elémentaire armchairs are by Jean Nouvel for Ligne Roset, and the red lamp is by Andrée Putman</span><span style="font-family: Theinhardt, -apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;, Roboto, Oxygen-Sans, Ubuntu, Cantarell, &quot;Helvetica Neue&quot;, sans-serif;">. </span>  Photo 2 of 11 in Rafael de Cárdenas Opens Up His Un-Parisian Paris Pied-à-Terre

Rafael de Cárdenas Opens Up His Un-Parisian Paris Pied-à-Terre

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In revamping their Paris duplex, designer Rafael de Cárdenas (on the right) and his partner, Cale Harrison, doubled down on the ascetic vibe of the modest space. The Elémentaire armchairs are by Jean Nouvel for Ligne Roset, and the red lamp is by Andrée Putman.