Little Mallee Studio is a great place to stay. It is about 10k from Margaret River, but it is only an easy 10 -15 min drive away, so you have the best of both worlds, a feeling of remoteness, but access to the amenities of the town. The studio itself is very spacious and stylishly furnished with a well equipped kitchen including an oven and gas hob, so good for preparing meals if you don't want to eat out. The bed was really comfy too, we both slept so well there; and all spotlessly clean.
We did not meet Renee, the house next door was empty whilst we were there, but all her communications were friendly and helpful. The instructions for retrieving the key were clear and we had no problems.
If we come back to Australia and Margaret River, we would definitely stay here again - but for longer next time!