A Private Indoor–Outdoor Oasis in the Sky More than a penthouse—PH 6/7 at 205 W 89th St is a private retreat where indoor–outdoor living defines the experience. A Saltillo-tiled walkway guides you to your residence, which opens onto a sprawling roof terrace that feels worlds away from the city below. Here, every season invites its own rhythm: long summer evenings with friends, crisp autumn morning...