Your dates are already past, unless you are asking about 2019. Best way to find out and compare prices is to use hotel booking sites and directly at the property website itself.

The 3 bedroom was actually a one bedroom with a bathroom right next door to a 2 bedroom with one bathroom. We were a group of 5.

Hi there is only 1 bathroom, not sure if they have any bungalows with 2? Take a look at their website for the 3-bedroom bungalow. Yes, we drove to Wineglass Bay, less than an hour and didn't join any tour. They do have a cruise which takes you to the bay by boat but quite expensive, I think over AUD200. Please note you have to walk for 1.5 hrs from the car park to the lookout to see the bay. If you want to walk right down to the beach, it takes 4-5 hrs I think, can't remember exactly. There is a sign board at the entrance of the trail telling you the walking distance. Hope this helps.

Detached 'cabins'.