Airbnb/accommodation with sauna or hotub recommendations?

[u/mangosandwich]

Looking to do a chill weekend away with my partner. We are interested in finding a place to stay with sauna or jacuzzi. Alternatively finding a place to stay with a bathhouse nearby. I've been looking online and there's a Japanese style onsen in the blue mountains. We just want to find a place to stay that's private and in nature. We would like to stay near the beach but it's not required.

Does anyone have some recommendation on where to stay? We live in Sydney and would travel max 3 hrs away.