Put this post in the general recommendations section then realised there was a section just for caravan parks so here it is again...sorry for the double posting.

Can't recommend this caravan park highly enough, it is in the beautiful south west of WA surrounded by huge trees, next to the river, with lots of lovely bush walks.  The facilities are clean, the kitchen is very basic, the town is just a stones throw away, with a new bakery opening up and lots of friendly locals.

While we have been staying here for the last few weeks we have met many travellers who didn't know the place existed, and came across it by accident.  Most of them ended up staying a few nights and were sad to leave.

http://www.nannupwa.com.au/pages/nannup-caravan-park/