Sex in public is a rather common fetish, with the window variant being a rather safe option for trying it to explore your borders.
If you live on the lower floors or your windows are close to the windows of another house, choose late evening, night or early morning for this play. The prospect of being caught is exciting, but let it stay in your fantasies. A random witness won’t spoil the mood, but a whole bunch of neighbors can turn a juicy exercise into an awkward situation.