Except for the Union League, the whole block is substantial old office buildings, including some that 50 years ago were among the most prestigious addresses in the city. (One of them was used as the set for the rich investment bank in the movie Trading Places.)
Looking on the map, though, one of the buildings has been converted to residential. It’s the building that has The Capital Grille in its street-level storefront. I wasn’t aware of that before, but it’s apparently a building with a lot of short-term rentals for corporate relocations. That must have been the place.