One of the first things De Waart did when they moved in was to remove all the curtains—save those on the bedroom windows—and change the lighting fixtures. "A nice lamp can add so much extra to a room," she says. De Waart favors organic shapes, like the Evolute by Matali Crasset for Danese Milano in the family room, Arco by the Castiglioni brothers for Flos in the living room, or the ping-pong-ball pendant light of her own design on one of the balconies.