We were in Austin for our son's wedding. The house was large enough for 14 people which included 3 children. It was very clean. The backyard was large enough for the children to burn up some built-up energy.
The only setback was the bathroom situation - another bathroom or half bath would have been very helpful.
We enjoyed our stay in Austin, it felt like we were at home. Justin and Becca were very helpful - the perfect host.