The house was nice to explore. I will say that not having the mouse lock to the window made navigation a pain sometimes.
There were some gaps in the walls, assuming they were intentional. Something I would point out to look out for was overlapping the walls and having a flickering effect between the two meshes. Not a major thing, but something that stuck out. Collisions with walls felt a bit weird, not sure how to explain it. I was able to go through the hole in the wall on the bottom floor, assuming that was by design.
I liked the random appearing figure. Made the place feel haunted and a nice little shock the first time it appeared.
If you are going to make clickable buttons, lock the camera. It felt awkward turning away from the guy talking to click the button to move dialogue forward. Same with the menu button. I would recommend maybe using a button press to bring up the menu options.
All in all, a fun little walking sim. Went back just to look around a bit more at the house since I was caught off guard by the guy the first time around.