Terrific subject for this crop restriction. The narrow vertical really emphasizes the height of the building and, therefore, gives us a sense of the size it must be.
This is well-presented, with nice detail. However, there isn't much to interest me in the subject matter. It would be more pleasing if someone was leaning out of one of the windows, or if curtains were blowing out a window, or some such thing. I realize that you can't create wasn't isn't present; I'm merely mentioning what I think holds this kind of image back from being a winner. (Believe me, I do the same thing all the time.)
Nice use of the format. I know you can't control it in this shot, but I keep wanting to see details in each window. I feel sort of like this is an excellent frame for really interesting stories in those window, but then I can't explore those stories.