We visited this in August as I'm interested in the occult, ghosts and witches although it was very interesting it did lack something. I was hoping to pick up a book about Salem or witches in Cornwall in the same time but they didn't really have a great deal in this area. It was quite interesting to see all of the names of witches from areas we are acquainted with today and wondering what it was like back then. Bit expensive though for what it is.
I will say it does look small on the outside but when you've walked around it you will be surprised how much is in there.