Bunbury in the South West Region is a little town with a big town attitude. Aimed at tourists this place can seem to be 'closed down' for winter.
The beaches are not brilliant but have the advantage of the Dolphin Centre which allows you to interact with wild dolphins on Koobana beach. The best time to go is in the morning.
There's a good diving wreck called the Lena and you can dive on it with just your basic Padi Licence.
Leschnault inlet is great for Kite Surfers and there are classes available.
Accomodation is varied and can be a bit sparce in the peak times.
There are los of places to eat out on the Coffee Strip, and if you have a bit of spare cash the Silos have restaurants which are very nice but a bit of a splash out.