Dude! played your game. It was a very minimalistic concept, which allowed you to exploit the storytelling to the maximum through game play. This is a very interesting kinda visual adventure. The cleaning up mechanic feeled in theme with the story that you were telling, to the point that when I got to understand what was going on, I legitimately felt unconfortable for all the rooms I had cleaned before. the story was simple, but what's important here was how well you guided the player thgouth the experience to discover what was really going on with the eyes, the notes and you yourself being a janitor. A good example that games built aroung their storytelling can be just as good as games build around fun mechanics.
(By the end of it, I was feeling watched and followed,)
About its core Game Loop, it felt good for the whole experience, but it feels like longer gameplay could get a little tedious, though I could see hoo you could turn this into a great horror game (where you are the killer! nice twist)