It's horrifying to me that such a beautiful piece of real-time rendering should be marred by herky-jerky camera movement. Please, people: life is too short to use gamepads to control first person games when you don't have to (i.e. on a desktop). Get a mouse+WASD going, crank up the mouse smoothing if it suits the mood of the piece (as it would here), and give us an elegant viewpoint to match the elegant environment.
Au contraire, I think the jerky movement was an excellent contrast to the beauty of the scene.
If the movement was too smooth, how could you tell between UE4 and some CGI applied to a video of a real appartment? I couldn't by just watching the video.