Located in Midtown East on Third Avenue between 52nd and 53rd Streets, 866 Third Avenue is a 31-story mixed-use building acquired by Witkoff in 1997. Following acquisition, Witkoff optimized the building’s value by creating three condominiums. Ground floor retail, which is retained by Witkoff, is fully leased. Floors 2 – 11 were sold to Memorial Sloane Kettering in 1997. Floors 12 – 31 were sold to Marriott International in 2004 and operate as a Courtyard Marriott Hotel.