Augusta was a very responsive and helpful host and her house was beautiful (definitely a new construction).
However, be warned that even though the listing says it sleeps 15, it definitely does not do so comfortably. In total there was a king bed (sleeps 2/3), 4 twin beds, a double, two couches, and two air mattresses that deflated very quickly. So, if the air mattresses worked, 15 would be a squeeze, and without, it is impossible for the house to comfortably sleep 15 guests. The bed I slept in was very comfortable, though, so it would be doable for a smaller group.
In addition to this, the neighborhood that the house is situated in is 15 minutes away from most places that you may want to go and is not very walkable. My cousin and I went on a short walk one morning and a dog chased us from the other side of the street to the point that I fell on the sidewalk and got some nasty scrapes from the impact.
All in all, we had a great time in Dallas despite some minor setbacks and appreciated Augusta's hospitality. Next time, though, I will be doing some more research on the area we stay in and make sure that the house actually sleeps the amount of people going on the trip. Happy vacationing!