In we go to a pitch black bar.... sounds of a projector firing up and a flickering porn movie appears on the wall, followed by a group of well past their sell by date ladies of the night...
Not the Pigalle by any chance? Elderly local punters disappearing behind the scenes with ladies and returning to the bar by the other door - straight into the beam of the projector. Bottles of 'champagne' called Piccolo available to purchase from the barman, calling himself Niccolo would you believe, to keep the ladies in conversation.
Sqn Ldr D***** talking to the middle-aged lady with the duelling scar on her cheek that glistened in the light from the screen on the wall. Fg Off H*****, the adjutant, looking on in rapt attention and later interviewed by the plods because the place was being used by the East Germans for recruiting 'helpers.'