you could try " knightnprinc " its an adult resort b&b located on the Clarence River near Yamba that appears to advertise the type of services your looking for.
Hardaus, good advise I couldn't have said it better myself, just make sure you find someone you like ( and hopefully likes you ) a better time is most likely to be had by all for all. Don't be frightened to ask if she has any preferences either, you could both be in for a pleasant surprise.