Mount McGregor, in eastern Saratoga County, was a resort area in the late 1800s. The clean, clear air and beautiful mountain views drew visitors from the region and luminaries of the era including Susan B. Anthony and Mark Twain.
A bit of backstory: There was no pension for Former Presidents until 1958. Presidents served their term(s), left Office, and became Private Citizens. The ability to provide for a President's family was up to the man's ability to provide through wealth, property, speeches, writings, etc.
Former President Grant was diagnosed in late October 1884 in New York City. His days were numbered and there was so much left to do to provide for his wife, Julia and their children Frederick, Ulysses (Buck), Ellen (Nelly), and Jesse. U.S. Grant was busy writing his memoirs.
Since his diagnosis, President Grant's health was reported on daily. There were news bulletins about his health, public speculation, and reports about his rush to finish the much anticipated memoirs.
New York Banker, Joseph W. Drexel, offered the Former President his Cottage on Mount McGregor.
President Grant, his family, friends, and his doctor arrived at this mountaintop Cottage on June 15, 1885. He needed a quiet environment to finish his memoir and provide a peaceful place for his family as he neared the end of his life.