We have a secured room in which we can leave luggage we don't need during the hike. Such as laptops, extra clothes, lenses, food etc.
Inside our vans. Norway has one of the lowest car break-ins in the world and can be considered totally save. Even then, we make sure all gear/luggage will be out of side when stored in the van.
In our room in the hotel.
In our hotels and when we are going to the Paradise mountain hike we will leave it in the secured room of the hotel.