Corporate Self Storage Facility - How to see if they'd sell?

[Jacob D Adamczak]

I passed this place the other day and it was in pretty rough shape.

Its the local Public Storage. Roof had shingles missing and I noticed other deferred maintenance, one of the recent reviews was saying that the climate controlled units were having an AC issue, etc.

With this being a corporation or franchise, how would you go about trying to see if they'd sell? With storage being so hot right now, I could see this being an opportunity, just not really sure what to do next.
The tax records say the LLC name and a PO box.

I'm guessing that this is a franchise owned by the LLC but with it being a Public Storage (name brand company and not a mom and pop) I didn't know if they trade the same as a mom and pop storage facility  . My thought would be to send a letter like a residential house but didn't know if there was more I could do. Not sure that being a large company that they'd take a yellow letter seriously.

Any suggestions?