For me, the only thing I don't like is the over-heavy black boarder. The picture has wonderful vertical lines that get thinner and thinner as they work their way out to the edge, only to then be hemmed in by a thick black line that doesn't let the image 'breathe'. I know I talk about images needing to breathe a fair bit but I hope you can get what I mean.
The picture itself is a bit tight cropped as it would have been better if we could see the rest of the spiral staircase but it is possible you couldn't see that anyway, not sure. Anyway, despite that, I do feel with the smallest of borders it allows the picture some space. An alternative would be to give it a mid-tone grey border so that it isn't so heavy.
Well, that's my 1p worth.... not quite worth 2p but we're trying :o)
Cheers,
Rob