I think that this is a great idea for a game (House Flipper meets spooky FPS) and I love the style. I do wish it was a bit more forgiving and intuitive, though.
It took me a few plays to understand what to do at night. I could barely hear the monsters' sounds, even with the music turned off, and when I did hear it, it became mostly a matter of rushing around the entire house trying to find where it was coming from. If you're a moment too late, it's instant game over. And if you want to play it again, you have to go through the intro and tutorial all over again, which are admittedly not long, but after a few plays I wish I could skip them.
Maybe give the player a few chances, more time, and/or have monsters take off a certain amount of health rather than insta-kill the player. The noises could be much louder, including the cleaning ones. At first, I thought that they didn't have any sound at all. It would also be nice to be able to use the mouse wheel to scroll through items.
I played this half a dozen times, which each playthrough ending only a few minutes into it. This is a game that I really do want to keep playing, but it feels like it keeps kicking me out just as things are getting interesting.