Door knock them yourself, Skip trace them and call/text (they may have already left) Skipgenie.com is a great tool for that, Post a written notice to the door (all that's required in most states), consult your attorney. 

See the Tools tab on BP, there are calculators there:  https://www.biggerpockets.com/real-estate-investment-calculator

@Jonathan Valdes a website called Furnished Finder is very popular for travelling nurses. 

You're there to engage, ask questions, study, master the vocabulary and pass every test keeping in mind you are acquiring a tool you can utilize to accrue *Career Capital

He told me it was popular in the 80s and 90s among his wealthier clients who found the condensation to be unsightly. 

Is this a high-demand, popular & growing area?

You can check existing storages using google map search "self storage near ...." and then visiting places to get an idea,  google earth looking at the roofs to estimate self storage use and estimate square feet, using tool such as radius plus and of course if want to pay for (which you should depending on how much money you are planning to put in the project) is get the feasibility study. 

Each of these skillsets became sharper tools in our tool box to take on other things.

Money can fix almost anything in real estate and if the only tool you have is a hammer, everything looks like a nail.Learn the biz on a limited scale - if you are hands on - buy a small property (1-4 units), maybe have some work done, advertise, rent it out and then manage it.

It’s a scheduling tool not a cleaning company.