This was neat! The descriptions of the rooms and halls, as well as the dialogs, were great! It really pulls you in. The little of bits of horror were also a nice touch.
I think the UI design worked well considering the setting of the story. However, the lack of map made going around the rooms confusing (left/right kept changing when you enter a room, which is normal in real life, but made it hard to keep track). I think a system of North/South/East/West would have help, because the cardinal points don't change. That or having a picture of a map.
The way you designed the dialog was also nice, and made me thing of those J-RPG design. I would have liked to be able to choose my own name though. Or have a choice between Ghost and a textbox for player input.
(little bug: when you are in full screen and close the top bar, you can't open it again. You need to leave fullscreen to open it)
Overall, really nice experience. Def gonna check out what else you've made.