Label your boxes:  You may not remember over time what you have packed in your boxes and labeling them will be so convenient when you move your storage boxes into your home.  Be sure to indicate FRAGILE on the boxes 

Purchase A Secure Lock: Only you will have access to your unit.  Disk locks are available for sale in the office.

Remove Legs From Large Tables:  This will help conserve room.  Placing mattresses beside tabletops will help prevent scratching or damage to furniture and will assist you in providing extra storage space.

Store Couches On End To Maximize Space.

Leave A Center Aisle:  This is helpful for access to the entire unit.  Leaving a few inches of space between the items and the wall will give you better ventilation.