The boat house is immaculately clean and the views are stunning.
Barbara and Glenn's directions and advice on the ferry and the water taxi were very helpful, and they were friendly and helpful over the whole weekend.
We borrowed their kayak and paddled around the island (around 45 minutes by very inexperienced paddlers), which was a great way to see the island and all the other lovely houses.
The bowling club in the middle of the island has good pizzas and friendly service. The store down by the ferry terminal has drinkable coffee (Glenn and Barbara's in the boathouse is better) but they sell very good bread by the loaf. Their fruit loaf is particularly good.
Dangar Island is a beautiful place to take a break from Sydney and chill out, only an hour or so by train from Central, and Glenn and Barbara's boathouse is as nice a place to see it from as you will find.