I have stayed at many apartments in East Austin during both SxSW and the 'off' season. They are almost exclusively managed by corporate entities, which means that they lack some of the personal touches of privately managed Airbnb properties, but are well administered and communication is generally very good. This apartment (technically on San Marcos but more easily accessible with a key fob from E 9th) is a good example of such corporate Airbnbs. The property was sizeable and had good amenities, was very comfortable, and was located well for access to both East Austin and downtown. Access is always a little complicated due to the need to enter first via garages and the like, but the instructions and photos were very clear and easy to follow. I would stay here again.