A sliding oak door leads from the living room to the studio library, outfitted with custom, white-lacquered built-in units and furnishings. The floor lamp is by Marset, and the MDM lounge chair and poufs, all from Materia, form a cozy reading nook.  Photo 7 of 11 in 10 Essential Tips For Creating a Hardworking Home Office from A Light, Bright Apartment Renovation in Barcelona