Your RV has an enclosed and heated underbelly. The only thing I saw on the brochure was that it was tested down to 10º, but it didn't specify which model it tested.
If you're living in the RV, be sure to use the built in LP furnace, since that is how the wt bay is heated. Some folks try to use electric heaters instead of LP since at a campground you are seldom charged for electricity but you have to refill the LP tanks.
Also don't leave water or sewage lines hooked up, fill or drain then store hoses until next time needed.
If you are talking about storage, I'd winterize it to be safe.