We stayed at John's place for 3 nights and had a wonderful time. While the weather dampened some of our planned activities (e.g. bigger hikes), we were still able to enjoy nearby national parks and the cabin was a lovely space to enjoy even during inclement weather, with a roasty fire and outdoor hot tub and plenty of space to lounge. The outdoor spaces were usable even in the cold with outdoor heating, and the river is a pleasure to hear at night (and I recommend an invigorating plunge if brave).
Close to Bellingen and Dorrigo if you're looking for a bit of civilisation, but isolated enough to escape it if you want to. As other reviews say John's house is close, but the setup is well designed for privacy and John is very respectful in providing it. However, I do recommend trying to cross paths with John a few times during your stay as he is wonderful company (as is his gorgeous lab Snooky). I would definitely recommend and hope our paths get to cross again soon.