We had never stayed in a caravan before, and we made sure to read all the comments and check all the pictures before booking the place. Now after staying at Brock and Julie's we're dreaming about living in a caravan of our own one day. Like many other people here we can confirm that we were not cold during the night, there was a heater available and many blankets in addition to the duvet over the bed (we didn't use the extra blankets but it was good to know it was there if needed).
The caravan is a short commute to the Queenstown city centre, but also to the airport, being located almost halfway in between the two. The money we saved on accomodation we spent in activities around the area and we wouldn't have it different; the caravan has a hot shower and functioning toilet, a mini fridge, toaster, microwave and kettle... basically everything you need.
Our four night stay in mid-August was extremely comfortable. Definitely worth the money we paid for and Brock and Julie were pretty accommodating to some of our needs (like dropping the luggage at the AirBnB earlier than check-in time, which was pretty handy).
We would definitely come back and recommend this place to everyone going to Queenstown in the future.