Nikki's place is wonderful. I was in Austin for six weeks, and I couldn't have asked for a better host. She's every easy going, incredibly easy to communicate with, and very respectful.
I personally didn't mind the distance from the house to downtown Austin, however, if you needed to be closer to central Austin for whatever reason, expect a bit of a drive. Also be mindful of traffic in a relatively large city.
The house was incredibly clean, which is important to me. I was able to do my laundry while I was there. Nikki made it a very welcoming environment. I truly enjoyed my time there.