GameOver has posted their review of Jazz and Faust, giving it a score of 68%. Here's a clip:
But Jazz and Faust might be a little too friendly. The game’s interface tells you exactly where you can use inventory objects, and there aren’t any red herrings, so almost all the puzzles can be solved with simple trial and error. Plus, unlike the DreamCatcher adventures that have the same level of friendliness, 1C Company didn’t make the inventory objects difficult to find. So Jazz and Faust is basically a walk in the park, and it shouldn’t even take 10 hours to finish.