Flushing-based Marx Development Group reacquired, for $35 million, the development assemblage at 450 Eleventh Avenue, located on the corner of West 37th Street in the Hudson Yards District, in 2013. Since then, the developer purchased 35,550 square feet of development rights for $7 million, and now new details of the planned hotel have been revealed by The Real Deal. Planned is a 42-story, 440-key Starwood Hotels & Resorts Worldwide hotel. The tower will measure roughly 213,300 square feet and will feature 3,000 square feet of ground-floor retail space. DSM Design Group is designing the project. Groundbreaking is expected later this year, and opening is slated for 2019. Two low-slung commercial buildings – at 448-452 Eleventh Avenue – must first be demolished.