Who to show and lease self storage units for OOS investor?

[Jeremiah T.]

I know you can outsource much of the operations (online payments, answering phone, SEO) to management companies who specialize in self storage operations (https://www.storageunitsoftware.com/call-answering)...

But how do folks recommend handling onsite physical tasks (ie: offline tenant rentals, showing units, stuck doors)? Is that a service that can be provided by your typical property management company? 

I realize an employee could do this, but I'd prefer to outsource to an organization vs. hiring. From those with first hand experience, do you always hire (an) employee(s)? Or have you leveraged a property management company? 

Wondering if there has been a mix of the two or if it almost always involves W2 hires.

Thanks!