It's a small casita--great place to crash if you have stuff to do in Austin. Walking distance from some cool shops and restaurants. Hosts were understanding about me arriving slightly earlier than 5 pm check-in.
My one gripe is that the casita directly abuts the family's backyard, and the door has a big glass window covered by a semi-sheer curtain. So there is a lot less privacy than one might expect from staying in a separate building from the main house.