Ambiguity indeed! I really like this one. It has so many layers and overlapping objects that my eye wanders all over the place, finally landing on the barber's chair and American flag. The exposure must have been tricky. You've got bright sunny sky in the upper right corner as well as dim building interiors. Nicely done.
Here's a thought - I don't know how it would look - if you wanted to emphasize the concept of ambiguity, you could flip the image horizontally. That would make the Storage sign read correctly. Seems to me that would increase the ambiguity of whether an object is real or reflection. Might be worth a try to see if you like it.