I spent a day at this site last year helping a volunteer group clear the banks of bushes, new trees etc as part of a CADW initiative. It was fantastic to be able to spend a day at a site ans know that you are helping preserve it for future generations. To avoid a long walk I would suggest you park by the church hall? (white building) and follow the path to the left of the house. It is only a 10 minute walk from here.