The Willunga Branch of the National Trust have put together a webpage with information on Willunga's historical buildings, including McCaffrey Cottage
Whilst McCaffrey Cottage was big enough for the McCaffrey's with their 9 children in the 1850's, some guests may find it a bit small when 4 adults are sharing. The room configuration is such that from the Queen bedroom you go through the single/king bedroom to get to the living, kitchen and bathroom, so it is wonderfully cozy for close friends! However, if you need something bigger then I can recommend Avonlea, a grand house down by the golf course run by Mark. Give him a call and tell him I sent you and he will give you his best rate!