It’s a Banksy window.
In June 2006, Banksy created an image of a naked man hanging out of a bedroom window on a wall visible from Park Street in central Bristol. The image sparked “a heated debate”, with the Bristol City Council leaving it up to the public to decide whether it should stay or go.After an internet discussion in which 97% of the 500 people surveyed supported the stencil, the city council decided it would be left on the building.The mural was later defaced with blue paint. (Wikipedia)
( Photo Vicky, April 2015 on a Bristol city visit)