It is a wonderful place! We loved our room, the view from there (in the night you can see the stars directly from your bed) and enjoyed staying with Tracys family. She, her man and her kids are very nice.
Then, Arthurs Point is a good place to be when visiting Queenstown. You are really quick in the city and are sure to always having a parking slot. Further, some bike tours start there ;)
All in all we absolutely recommend Tracys Airbnb.