Thanks for the comment.
Actually the scene is lit by two lightsources, the moon (top left) and a 15 watt lightbulb (top right).
Guess who's always winning? That is also the reason why the shadows casted by the moonlight are stronger.
That is also the reason why the shadow casted by the bellboy is fading out towards the light from the lightbulb.
I agree the shadow casted by the bench isn't exactly correct, but I could correct that.
I agree, it is not exactly how it should be but here's how I see it:
In red is how the shadows should be, but they are casting more to the right
In pink, that shadow has nothing to do with the bench but is coming from a tree left, not in the picture
In blue, the shadow of the branches in the top left corner.
I agree with your analisis, i think the sun is on top left of that picture, so maybe changing the moon reflection and shadowing to almost straight right is better and playing with the multiples shadows that the streetlight create, hope is understandable with my lame english XD.