I was in Austin for two nights for a conference and wanted to stay close to downtown. The Rainey Street area is very lively with lots of bars and restaurants, and on weekends I can imagine it gets quite rowdy – so I'm glad I was there during the week. This unit is right in the heart of everything and is on the street level, however it's around the corner from Rainey and therefore is just far enough away for the noise to not be an issue at night (during the week, that is). The space is very comfortable, and I especially liked the enormous bathroom and bathtub. It's a quick walk to the downtown area which was convenient for me.
One important thing to note is that the check-in instructions are a bit complicated, and the photos did not appear on the Airbnb app. Fortunately I had logged into the Airbnb website on my laptop and took photos of the the photos posted with the instructions. You need to see these photos in order to check in, as they contain the code to get into the building as well as directions on how to find the unit and where the keyfob is located inside the unit. So be sure to look at the check-in instructions from a computer and not assume that you will have all of the info accessible on the app.