Great report so far - has there been any damage locally from the recent bush fires - I imagine you saw a lot of burnt trees on your way through the Blue Mountains.
If you're still there and will be driving back to Sydney ask the hotel for directions back through the delightfully named Bell's Line of Road through Bilpin, Kurrajong, Richmond, etc - one of my favourite drives in Oz.
BTW - a few weeks ago I spent a few days on a friend's farm in a similarly wonderful setting a bit to the east of where you are - unfortunately I didn't have my own plunge pool
but it was free! Just sitting on her porch overlooking her paddocks with a glass of chilled chardonnay in the evening listening to the wildlife especially the birds was wonderful - I imagine Wolgan Valley is the same. Oh and horse riding was the only activity available unless you count walking around her property!