Five of the six changes could have been made by the guest himself before he died, or simply by the passage of time. Only one requires that someone else came in afterward. The inventory of the body listed his key, the only one to room 14.
You are the floor maid. You open the door with the master key, see what is inside for less than a minute, and run downstairs to report it. When the judicial commission comes up, at nine, six things are not as you saw them. No one else went in. No one else can say how it looked before.
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