Youtube has it in German with English subtitles and with embedding disabled. Internet Archive has the English version (which was filmed at the same time):
There's still a lot of German, even in the English-language version.
1001 Movies You Must See Before You Die calls it "a tale of decline". GermanFlicks.com says,
The film was a landmark for German film in the new medium of sound pictures and marked the beginning of a lasting professional relationship between the director and actress.Roger Ebert says it "is intriguing for its glimpses of backstage life in shabby German postwar vaudeville, and for Dietrich's performance". It has a score of 94% at Rotten Tomatoes.