This dark den contrasts to the bright central living room

“I’m not a wallpaper person at all, but every time I use it, I use a William Morris design,” Arnold says of the Morris & Co. heritage print he chose for the den. Combined with Farrow & Ball Studio Green paint on the wainscoting and ceiling, lush draperies in a Holland & Sherry velvet and a Trnk NYC sofa, the space feels like a welcoming retreat.

East Coast Tradition Meets West Coast Chill In A Youthful Hamptons Abode