This is one of my favorites. Beautiful. Achieved a peaceful softness, without sacrificing the crisply defined object - the Triangle! (a lot of entries forgot that point.) 10
Very nice - minor complaint: I would have like to have seen the whole of the tree, but from the reflections, it looks like there's a line of parked cars or something, so I can understand the crop.
I see two different compositions in this image. One using the symmetry of the railing and its reflection and the other with the railing, tree and bench.
For the latter, cropping most of the reflection and not cropping as much on top would make a very tranquil image. To exploit the symmetry a vertical composition might work better and I don't think the tree and bench are needed.
In either case, more contrast would probably increase the impact of the image. 6