This complete renovation of a three-bedroom, pre-war apartment was our second project for an empty-nested couple who wanted to embrace the tradition of living on Park Avenue by keeping the architecture traditional. To distinguish their design and keep it playful, we chose deep purple for every surface of the library, and the custom wood partner’s desk was rounded at the corners to allow for easy circulation for the many events the couple planned to host in the space. Built-in millwork in the primary suite dressing room makes the most of a narrow space while maximizing storage.