Editing: We never leave the Jeff's Room

As we can see in the following scenes, we never leave the room

In the movie Rear Window, point-of-view editing is used to put the audience in the position of Jeffries character. The vast part of the shots are from the prespective of Jeffries house, to create that voyurial atmosphere and suspense. There are even  shots that represent the sight from his binoculars or camera. This help to indetify with his character, creates onward tension, from the moment he starts spying on his neighbors to the moment his girlfriend gets caught. The viewer does not have more information than "Jeff" at any point of the film. Also, the background information we obtain about the main character himselft is cleverly decyphered through a telphone conversation that is cleverly edited at the opening scene:

In the scene in which his girlfiend, Lisa, get caught interfering in the flat of the suspect (2nd vide in this post), Hitchcock could have chosen to use a camera in that flat, but instead, wanted to show the viewer the action from the prespective of Jeffries. Suspense is based on the drama that his lover is seeing her being caught, not the violent assault by the suspect murderer. And the director puts us in his skin.