Keep in mind to get the historical tax credit money they had to restore the facade to the modernization facade you still see today. They looked at the original facade underneath and it was so long gone the state wouldn't provide the money to restore it. When the "fins" were added decades ago to the brick columns they messed with a significant amount of the original details. I even heard that the historical commission almost didn't approve the basement level windows because they aren't original to the modernization that was done when they put the fins on the columns. If those ground level basement windows would have been filled the basement would basically be useless.
Currently, an independent gym, Motopia, and Dev Mountain occupy the basement along with the apartment building amenities.