The RV trailer life is legit. I stayed there for a week and was utterly satisfied.
The trailer itself was very neat, surprisingly spacious, and incredibly cool in design. It included all the basics such as AC, WiFi, hot water, and a kitchenette space. There was even some nifty literature on the shelves for one's downtime.
The location in East Austin cannot be beat. You'll be within walking/driving distance of the trendy Mueller District, which includes parks, yoga studios, stores, and a museum. You'll have an easy path to a Blue Starlite or Alamo Drafthouse theater and will be within easy driving distance to downtown Austin.
Leyla is a very nice host who will respect your privacy but will also respond readily to a text or inquiry for assistance/info/whatever should you need it.
I enjoyed my time there and would heartily recommend it.