I agree with Mike in that I like seeing both doorways - it adds to the framing aspect. You need to rotate this image though so that it sits perfectly level. Just slightly counter-clockwise, and then crop out the chair on the bottom right of the frame. Seeing only that tiny bit is distracting.
I really like this picture and how the light reflects off the ceiling and walls. I agree that if this image was cropped just slightly on either side it would make the effect more intense. But otherwise, great job!