Color. The nice interplay of light and shadows is a bit lost on the conversion to b&w (esp. on the right side). I'm not even sure if you meant for the shadows to be a prominent part of the image or not, though.
If I were there, I would have probably shifted to a different POV. Maybe facing the building straight on with "The Belmont" on one side of the frame and one person walking into the frame on the other side. It would have made for a cleaner composition and showed the main subject.There's nice geometry you can outline with that composition as well (rectangles and contrast of the white and black doors).