Just book this place :) Seriously
We had a bachelor's party for 8 guys and it was awesome.
The house is plenty big. You are distant enough from neighbors so that you don't have to be too concerned about making some noise (but obviously be respectful)
It's right next to La BBQ which is some of the best BBQ in Austin (taught Franklin's apparently? Not sure)
Shane is a great guy and super helpful. He suggested places to go and reassured us when we needed reassuring.
The neighborhood is close to all the good things, Rainey St and Sixth St.