I've stayed at a lot of Airbnb's and vacation rentals. Brian's is tied for the top position. If you want to come to Austin and you are not deadset on a downtown stay, stay here. It is no more than 20-30 minutes to everything wonderful in Austin.
The property it's self is wonderful for families. There is abundant room for kids to run around, a full kitchen with everything you need, and every amenity you would want. We did an extended stay and the property easily became our home.
If you stay here you owe it to yourself to check out Civil Goat coffee up the street and Austin's pizza. Austin's Pizza has a great playground for kids.
The walking/running/ cycling from here is second to none. Make sure you wear something reflective though as it is dark out here, because of that though the stars are incredible. After you head out come back and enjoy the outdoor shower.
Can't wait to come back.