A warehouse should be in a place where there can never be a terrorist attack or even a war. It is going to be detrimental for the cargo you have stored if a comprehensive war is conducted at the spot. The place should not be open to ultraviolet radiation or radiation of any sort. Radiation can prove to be harmful to many things stored in a warehouse.
A good storage service also offers storage of food items and other consumable items. This way, the temperature of the place where the items are being stored has to be maintained at an optimum level. It should be kept away from all kinds of humidity and moisture. A torrential rainfall is going to be detrimental to your stored items.
Sudden changes in local temperature are also likely to push your cargo to limits of being spoil. They should also be kept away from rodents and rats. A regular inspection of the place chosen for storing is going to be the best bet in this case. All kinds of termites and bugs should also be kept away from the place chosen for storing goods and artifacts. They can easily wreck havoc in your cargo in no time, and you are to be the loser at the end of the day.