The room is in a lovely house right on the river. The street looks a bit industrial, but once you enter the property through the front gate, you'll see it is beautiful. The hosts have gone way above and beyond normal hospitality. They allow and encourage swimming in the river (with an appropriate liability waiver) and even provide towels. They also offer old but workable bikes you can borrow. There is ample outdoor seating with a great view of the river.
The room itself is fairly small, but comfortable, quiet, very clean and well-provisioned with a comfortable queen bed and every amenity I can think of. It has a private entrance. It is perfect spot for a single guest or couple for a few nights.
The house is about 3 miles from downtown Austin, a nice walk for most of that distance along the beautiful river-front trail.
Finally, Gina and Mike are gracious, welcoming hosts. I will certainly try to stay with them again the next time I visit Austin.