The 4,000 sq. ft. loft belongs to Home Studios, Inc. and is located at 873 Broadway by 18th St. [1] - nowhere near Columbus Park. It has been a popular set for all kinds of events, including cooking shows on TV.
Before moving into the loft, Reese lived in an old apartment at an unspecified location. (“Many Happy Returns”)
While working Ernie Trask's number, Finch arranged for Reese to move into an apartment at a noble residential building where Trask was working as a super. The apartment's real location is The Apthorp at 2211 Broadway. (“Super”)[2]