Well spotted, I like the way you can see more in the reflection, i.e. you cant tell theres a small child from the bottom half of the picture. My only crit would be its a little dark, but thats just MPP
Louise, Thanks for the comments, I didn't have much time I was on my way out of the Baltic and saw the reflection and shot it, maybe I could have waited for more people leaving and took more time over the exposure.
If you have photoshop essentials or higher you could use shadows & highlights to recover some of the darker parts, or even the dodge tool, but I think it's quite atmospheric as it is.