Pros and cons are down below) Check out my vid (the 1st game in the vid):
Advantages:
1. The layout of the place is really cool. I like how different and detailed the rooms are.
2. Spooks - they are really nice. I especially liked the sound design for them. Though, some small details - like picture changing to another one, would be a nice addition.
3. Story elements. I like how in such a small game you implemented story elements of the fate of the friend. And their conversation in the first place is a nice way to explain what's going on.
Disadvantages (more like space for further development):
1. The monster didn't seem like a threat. Maybe it would be nice to add a small chasing down the hallway sequence or something like that to make them seem more frightening.
2. The photos on the walls are strange. Maybe it's not something that is commonly hang on the walls.
3. The appearing keys are strange. Maybe it would be cool to figure out a different way to proceed (a spooky door opening on its own or something similar)
Overall:
I enjoyed the experience! The game spooked me a couple of times, so I am quite satisfied) I think this game has lots of potential and I would like to see similar but bigger works)
Hope my feedback was useful!