Reserve the best Windsor Heights self storage at StorageMart. Visit 6525 Center St or call 515.279.8500. First month free on select units, get an instant quote online today! This Windsor Heights self storage features large, drive-up storage units so that you can pull your car or truck directly up to your storage unit. You’ll be able to move in even quicker with the free use of our dollies or hand carts. Our storage location is brightly lit with video surveillance throughout the property. You can access your storage unit during our gate hours at 6am to 10pm.