Storage Space/Studio

Has anyone tried renting a storage unit and using it as a studio? It was suggested as an option by someone who used a unit when his band practiced. Some allow after hours access and the main downside is plumbing and restroom facilities. Perhaps a camping portapotty would suffice.

In my area I have not located an establishment with the freedom of access I desire. I work all hours of the day and night. But this friend has located facilities in other areas that would better accomodate these limitations.

It is worth considering. There is a great shortage of studio space and an abundance of storage units.