Castle Options

Book 2 has many settings but one of the settings is a castle in England.  I am trying to decide which castle though. I've googled a few and even reached out to my cousin who lives in Middlesex, England for her thoughts. She suggested Hever Castle & Gardens which was the childhood home of Anne Boleyn.  In looking at the website it seems too cleaned up and pretty to me with Easter celebrations and a tulip show even.  I'm looking for an old, craggy castle that's half abandoned and looks like it belongs in a medieval story.  Anyway, let me know your thoughts.  I'm open to castle suggestions!