Architect Matthew Grzywinski gives us a tour of the Lower East side boutique establishment, Hotel on Rivington. Offering panoramic views of New York's skyline through its floor-to-ceiling windows, this chic hotel plays part in the gentrification of the district du jour, the Lower East Side, once the city's poorest and grittiest of areas. Address: 107 Rivington Street, New York, NY 10002, www.hotelonrivington.com