The twisted “Segal Staircase” (“It’s almost like a ladder that spins around,” explains Jo)—a signature element in the neighborhoods’ homes—got a fresh look, with panelling in front of each stair and stabilizing poles. It also received a striking coat of turquoise paint. “I can’t remember the Pantone color, but needless to say there was a big argument about it for six months,” laughs Jo. “I guess I won.”