Even though it must have been really challenging in such a complex architectural environmnet, you chose the right position because all the vertical, horizontal, and diagonal lines are well composed, no overlapping (except the top-left back column being slightly covered by the staircase). You managed the difficult indoor exposure perfectly! Unlike Matej, I cannot see a sharpness problem... well, but he has younger eyes ;-). Thanks for your comment on my pic, the white spots were flowers, you're right. I cropped the foreground a bit, as you can see.
This has ideal light, you really got the exposure spot on. The composition is also very good - the dominant white pillar to the right of the centre, the darker lines of the escalators on the left, and all that movement in-between. The plant in the bottom left corner is right on, it's a strong part of the framing. And as a bonus detail, you've even included the bend in the railing in the bottom right corner - where one would expect the railing to exit the image in an orderly manner as the other railings do, it just suddenly turns in a different direction.
The moment when you pressed the shutter was well-chosen - just a second later, and the guy on the lower escalator would have been covered by the plant.
Have you noticed the person sitting on the bench on the middle balcony on the right? Everybody else is either moving around or they're in the middle of shopping, only this person is just sitting there alone, sort of dejectedly, seems to me... It adds a nice emotional contrast.
Too bad the image isn't sharper, it would be almost perfect.