You really are a brilliantly accomplished photographer. Having fiddled about with cameras for nearly 50 years, I still can't imagine how anyone can master the craft sufficiently to take photographs of this kind of difficult subject with such meticulous verity. I couldn't do it. Of course, I don't wish to either, but sometimes I wonder if I can't do it because I don't wish to, or I don't wish to because I can't do it. But I give myself the benefit of the doubt. Thank you.
My eyesight is so bad now that I'd not have seen the detail in the ceiling if it wasn't for your picture so thanks :) My brain is trying to tell me that the ceiling is in fact the floor.
I agree with Barbara about liking a bit more contrast with this sort of thing for my personal tastes, and could also be very effective in b&w. Nicely framed as is, but as I look longer at it I wonder if you could get more "movement" out of the composition if you put the middle of the leading column in the corner, rather than the left side of it - that would push the ceiling struts (?) at a diagonal to the square framing, rather than at a perpendicular, and coupled with the circular designs set the whole thing "turning". Might not have enough space in the original shot to do this, but it could be a interesting alternative comp.
This is how a parasol looks to an ant. Interesting pattern on the ceiling, a celestial kaleidoscope. The red, white, blue and yellow medallions add an interesting counterpoint.