I stayed at Joanne's place for 2 nights with 4 other friends but we definitely wished we'd stay for longer!
The house surprised us, it's very clean, warm and cozy, but large enough for 5 people to have a comfortable stay. Beds are comfy, the living room has a TV, board games and a fireplace for some relaxing evenings with your mates after a day of hiking.
The kitchen has everything you need for cooking for 5, large pans, a large fridge, a large table and a cupboard to easily store/access groceries.
It is located in a picturesque little town that is quite isolated and only has a 'multi-purpose' (selling basic groceries and breakfast) petrol station that closes at 5pm. I suggest you stack up on everything you need in a larger town on the way there cause Waratah has basically no stores and it's quite a drive from other centres. However, it's quite close to the National Park!
Overall, our experience was very positive. This is not your typical AirBnB, as you probably won't meet the host (self-check in), but it's great for group of friends looking for a place to rest, have a good meal, and warm up after a long hiking day!