I love it! The art is gorgeous, I really like the little detail you added in your character so they feel like real characters (like the butler will bow when you passes him)
I especially love the possess ability, unlocks so many different interations and it's really fun to explore those options with different characters.
I didn't run into any game breaking bugs, each item works perfectly. I did notice the coffin at the end of the hall will go above the main character's head when we're near it (looks pretty funny tho lol)
I also do wish that we could move faster, since main part of the gameplay is going around the mansion and talk to people, I wish I could get to places faster so the interesting part can happen.
But overall I had lots of fun playing, and I personally think that the gameplay is much more interesting than a lot of games with similar genre I've played in the past (for example: Project Kat)