I would recommend Extra Space Place! I've been using them for three years, and it's a clean facility. It seems like it's well protected, and I can usually get in touch with a person at the office during business hours if I need. They're very accommodating.

One time, there was a leak in my unit, and they very quickly allowed me to move to another unit just two doors down. I wasn't happy with the leak, but I was glad they were able to get me into a new space. That was important to me.