This is a very charming game! I enjoyed the set up and ambiance of the estate. The writing and scenarios make the game very immersive, and I had a blast exploring. Sadly, I ended up arriving at the Vault after only 5 turns and was very unprepared for the final puzzle.
SPOILER:
Unless I missed another way to clear the last puzzle, you need to explore the mansion until you manage to gather 4 clues needed for the Vault, without knowing that you need them in the first place. Great for someone who likes to explore, not great for my Dandy starting out with 5 Stamina and -3 Escape. I did dip out of the Vault to explore further, but gave up after a particularly nasty fall down the Tower.