If the STR is placed into service at the end of the year, they can use the paper-loss from the STR to 'potentially' offset other forms of income such as wages, interest, dividends, etc.Best of luck

Go to Etsy and search for "rental property tracker," and you will find hundreds of nice spreadsheets to track 10-20 rentals, usually for under $10.Software has extremely helpful features like online payments, marketing syndication (click a button, and your property is advertised on multiple sites), electronic document review/signing, maintenance tracking, and owner reports.

Performing notes the investor makes money from the monthly payments at a ROI determined by the payments and the amount paid for the note.  

However, it doesn’t seem like the tenant is at fault for the issues you described.

I agree with the others who have commented.

Does their collective business occupy one of the spaces in the building? 

Here are the steps you need to take AFTER receiving the contractors response to the above1.

Glad to have you on the forum, Chad!

On the next renewal just site rehabbing the entire unit and get her out.

You'll spend a lot of time (sounds like you may have already) spinning your wheels in trying to find the right lender, whereas a solid broker can pair you up with the right fit right away and get your project moving.