Quick and easy to get a unit.
I was to to reserve a unit online without a credit card, and got a discount from using sparefoot.
I moved into a bigger unit and was provided a lock to borrow until I finished transferring from the small to the new instead of having to buy another just for a few days.
Customer service is great, and I tend to stay and chat when it's slow.
My bigger unit was a bit dirty, and had ants, but after a quick sweep I haven't had any problems.
It's a great value and the units are cool enough that I feel safe storing heat sensitive items (melted crayons and candles are not fun to deal with).