Where did you end up staying. Wish I'd have seen this post earlier we travel to Austin multiple times a year in our RV and surrounding areas. Lonestar, outside the city. McKinney Falls is nice - small sites, Oak Forest is my favorite - really close to everything Austin has to offer, clean, pool, great owners. Pecan Grove - If you want submerse yourself in, "Austin" this is the place to stay.
2015 Georgetown Forest River 351DS MH
2008 Keystone Cougar 293SAB 5th Wheel
2007 Jay Flight 30.5RLS 5th Wheel
2006 Jay Flight 29BHS TT