The month of November brought some very lofty new listings. At the top of the pack is Unit #PH2D, a 4-bedroom, 4.5-bath penthouse at the Ritz-Carlton Georgetown. The 4,413 square-foot bird’s nest duplex is listed at $7,750,000 and features a gourmet kitchen, den, family room and amazing Potomac River views from the private rooftop terrace. […]