The color is wonderful, but I love the fact that you had him walking out of the frame. We've been taught so many times to leave space, and he has space, but we're so ingrained on putting him in the upper left corner. His placement is wonderful--and makes the picture.
One of those rare shots where the colour is integral. (IMO). Very much enjoy this, imagining his morning thoughts, what place he has in the vast edifice, what lies behind him and what sort of future he might envision for himself within it.... Maybe just a cappuccino.
Classic travel photo, love the shadows and lines. Stumbled on your collection as planning for next summer's trip to Rome (among other areas), and glad I did.