

International students often use it because it’s not feasible to take their stuff home over the summer. I also used Summer storage, because I was estranged from my family, so didn’t have a “home” to go back to and would have to spend the Summer in sublets or couch-surfing (the only accommodation that would accept me as a tenant were student properties, which is why I typically had to be out over the Summer).
My experience is actually in the UK, but based on anecdotes from friends, it’s similar in the US.
In my case, in one of the years, I could apply to stay in university accommodation over the Summer, but the room I was allocated for that was tiny, so I needed to get some storage anyway. It’s annoying as hell