Out of this set, #3 is the best. However, if I could crop it myself I would start with #3 and crop the window out as it draws the eye up and away from the subjects in the photo. I tried adding a note on your flickr images but it appears as if you have notes turned off and I noticed you have requested to be asked before editing so if you want to provide the full image and allow me to show you how I'd crop it I could show you what I mean.