Most homeless shelters don't have ballrooms. Walking into the elegant lobby of New York's old Prince George Hotel, with its richly hued woodwork, feels like you've entered some Merchant Ivory movie, not a residence for displaced individuals. It's the surprising creation of Rosanne Haggerty, founder and director of the nonprofit Common Ground. Her organization creates similarly attractive facilities across the city— some elaborate renovations like this one, some built from scratch. The goal is a benign and inclusive form of gentrification.