I wrote polite comments in the Gregory's guest book, but here I have to be honest. As a birder and bird photographer, Cassowary House was the biggest disappointment in several decades of visiting birding lodges around the world.
The visitor should know that Cassowary House is a private residence first and a birding lodge second. It is nestled quite literally in dense rainforest - the vegetation extends right up to the walls of all buildings. This creates an "away from it all" feeling, but makes it well nigh impossible to actually see very many of the forest birds one hears calling around the lodge.
And then there are the dog(s). One can understand the desire to have a German Shepard or two for protection when living in a secluded spot like this. However, it does not make one feel welcome when, even after two days, the dog comes charging furiously at you from within the main house whenever you approach. Nor does it help that the dog starts barking at the slightest sound. Nor does it help when Sue puts cheese on the balcony tray for riflebirds & catbirds only to have it immediately eaten by the dog.
Cassowary House has its upside. The rooms are large, comfortable, and fairly priced. The breakfasts are sumptious. The Gregory's are also to be commended for their efforts in conservation, especially with regard to Southern Cassowary. As others have said, this is perhaps the only reliable place to go if you need that bird for your list.
Cassowary House is perhaps best enjoyed by those who can identify Queensland forest birds by their calls alone, and who love big rowdy dogs regardless of their behavior.