Under the Roofs of Paris
Sous les toits de Paris (original)
Starring Albert Préjean, Pola Illéry, Edmond T. Gréville, Bill Bocket, Gaston Modot, Paul Ollivier, Raymond Aimos, Thomy Bourdelle, Delphine Abdala, Raymond Blot
It's a drama and comedy movie, and has a rating of 7.1 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Germany.