This song just everything, the music, the really strong song of Bowie, as well as an outstanding text. The really powerful text deals with the story of two lovers who meet in the shadow of the Berlin Wall.
All versions can convince here, the live recording vocals not quite the quality of the studio version has, but just draws its own special charm. Also incomparably the two versions: German and English / German who are just wonderful and the German text is quite appealing.
Slightly weaker I find the French version, but that's just a matter of taste.