Castle on the Mead by K.T. Dady

Harrison Connell leads a quiet life, but Ashley Hadley is determined to get him to come out of his shell. When she gets the chance to move into his castle, she sets about putting the old building back on the map. Harrison doesn’t want his home to become a tourist attraction, but that’s the least of his worries, as someone seems determined to destroy him, or maybe it’s Ashley they want to hurt.