Best self-storage I've used by far.
I've had to use self-storage for various reasons, but usually storing furniture before a move, after a move, in between moves. I've used Yellow and StorageMart, and was always concerned about security, and could visibly see rat droppings and broken glass in the hallways.
These people know what they're doing. Employees actually seem to like working there. The facilities are sqeaky clean, you can drive through usually really close to your storage unit. It's is temperature controlled and disinfected. It was also cheaper than the crappier alternatives.
And forget about stupid rules regarding pre-payments, if you want to empty your unit today, you only pay until today, not the whole month.