I think it is important to know that the shack is a bit older and does not have the amenities that one would expect in a more modern home. In fairness Julie was upfront about this. I just happened to go on a weekend which was 39 & 38 degrees respectively. I would not advise that this would be for everyone when the weather is extreme.
The place is just as described, rustic, musty and basic. If that is your thing, then you will enjoy it immensely. Proximity to the beach is also a great advantage.