Barbara and Lou Grumet, both 80 and longtime residents of the building, left their Riverdale home in 2011 for a two-bedroom co-op, drawn to the building’s location near Broadway and top-tier ...

In 2011, Barbara and Lou Grumet bought a two-bedroom co-op for $775,000 at 100 W. 57th St., leaving behind their house in Riverdale for a fully accessible apartment close to Mount Sinai West, ...

Barbara and Lou Grumet, both 80 and longtime residents of the building, left their Riverdale home in 2011 for a two-bedroom co-op, drawn to the building’s location near Broadway and top-tier ...