Upon careful point for point comparison of this photo and the poster under extreme magnification, I can conclude, without doubt, that these are most definitely taken in the same room, from the same perspective but a slightly different angle. This means that we still don't know the extent of the room behind the camera. It also tells us that either the small window
or the Lucy painting exist in that spot, but not both. I'd guess that the window exists in the film and the painting was photo shopped in for the poster. We can also conclude from this that I have an unplanned day off today and thus way too much time on my hands.
Art has a double face, of expression and illusion.