McLEAN, Va.–(BUSINESS WIRE)–Keyserling Management Group, LLC (KMG), led by Managing Member Joseph Michael, has retained SVN | Providence Realty Advisors to identify and evaluate existing buildings and development sites in Tysons, Virginia, for a proposed mixed-use development combining hospitality, residential, commercial, cultural, and educational facilities. The preliminary concept encompasses approximately 450,000 square feet, including 165 hotel suites, up to 200 apartment residences, off