We took a tour with a docent and enjoyed it very much. The house was extravagantly decorated for Christmas and it was fun just seeing that, but the docent really made the history behind the home come to life. She told of how John Rockefellar came to purchase the house and there were many pictures with notable people, like Thomas Edison and Henry Ford. For us it was a great place to spend a gloomy day and it rained while we were in the house - when we left the sun was shining and we enjoyed walking around the garden across the street right on the Halifax River.
There is no fee to tour the home, but they do have a free-will donation box which we used. It is a beautiful home, lovingly restored and now used as sort of a community center for dance classes, cooking classes, weddings, etc.