On Park Avenue in Hoboken, this two-story duplex started as a compartmentalized layout that worked against its own square footage. An industrial glass wall sealed the entry off from the rooms beyond; taking it down let the floor plan breathe, then custom moldings and a taupe palette settled everything into place. A gray marble fireplace anchors the lounge, flanked by walnut built-ins. One side hides a bar lined in high-gloss emerald behind a smoky mirror; the other opens onto slatted walnut walls set with brass inlay. Silk wallpaper, a custom eleven-seat sofa, and an emerald swivel chair finish the room. Considered, confident, quietly sure of itself. The original divide disappears.