I personally like Rope, but I'm a sucker for Jimmy Stewart too. It's got interesting ideas, and the experiment is a touch of a failure towards the end of the film, falling over itself by the end. But the entire thing is just a slight level of creepy that works for me.
At least it's a miss because of experimentation, not because of any tired routine. when you experiment, you fail sometimes. I'd be very curious to see a remake of sorts, trying to preserve that all one take technique.