the old glass adds antiquity to the photo, nice color from the ceiling, they seem to go with the outside. I think the red on the floor seems to add a feeling from the "niceness" of the other colors. Light upward uniform, the floor goes top right to bottom left, kind of distracting, to me.
Hmm was my first reaction. The more I look at this the more I like it. I like the blackness and the roof light and the painted effect through the window but I wondered where the red light is coming from, presumably its red carpet? I think if that had been a wooden floor it would have completed it. Good luck