8/10 Very good
Overall, great place to stay--lots of space, clean and quiet. The arrival is a l little challenging--but basically you have to make a temp stop through the sales office parking area, go up, get the access keys and come back down and move your car into the overnight parking from the sales office parking. This does mean you need to leave your car and stuff, and then come back.
The apartment access is secure and everything feels good once inside. The apartment is part of a large development with several Kasa units and presumably leased/purchased regular units.
The location is in urban downtown Austin, and the same caution used in any big city should be applied here.