In the heart of Paris on 7 rue Méchain, an architectural marvel by Robert Mallet-Stevens emerges, a unique apartment building designed in 1928-1929. Crafted at the request of Jean Deschamps, it remains hidden behind an unassuming street facade, a treasure trove of Mallet-Stevens’ signature design elements which include spatial harmonies, innovative angles, and panoramic rooftop terraces. Its windows are exquisite, just like the interior, if you are ever given the chance to enter it. Within its walls, the Polish artist Tamara de Lempicka found her creative haven. After moving to…