One of the few Co-Op buildings in Boston, 301 Berkeley St. has 9 residences and is located at the corner of Marlborough & Berkeley Streets -- just 1 block from the Public Garden.  Built in 1923, 301 Berkeley is a 9 story building that features a doorman, 24 hour superintendent, roofdeck and parking.  Many of the residences feature original details such as moldings, trim and hardwood floors.  301 Berkeley is just steps to the Charles River, Public Garden, Newbury Street and Beacon Hill.