Peter's place was the perfect little retreat for my friend and I upon arrival to Austin after a lengthy August roadtrip before moving here for graduate school. I was skeptical about staying in a camper from childhood experiences, but Peter's place proved me wrong by being comfortable, cozy, and full of all the modern amenities one desires. The location is safe and quiet (in addition to the friendly dog next door; biscuits provided!), and Peter even let me lock my bike up in the shed, which I greatly appreciated.
My only FYI to travelers is that the driveway angle was a bit rough for a small Hyundai Accent loaded to the gills, so it was a bit tricky to maneuver in and out without scraping things a bit. However, that wasn't a huge problem for me since my car already has a ton of scratches :)
The RV has the most comfortable AC I could have imagined, and the bed was lovely. While there are a lot of directions for the toilet, shower, cooking, etc., they're really quite self-explanatory and easy to use once you're in the space. Plus, Peter is tremendously responsive, so it's never a problem.
This is a safe, wonderful, affordable place to stay in the cool Zilker area. Go eat at Chuy's and swim in Barton Springs with the courtesy bag and water bottle found in the Airstream; you won't regret it!