Go to Etsy and search for "rental property tracker," and you will find hundreds of excellent spreadsheets to track 10-20 rentals, usually for under $10.

You really wanna lose a good paying tnpenant over a few hundred bucks?  

Look for something that needs cosmetics work, such as new flooring, paint, cabinets, etc, as this will help build value and get the most rent.   

That mistake could cost you hundreds of thousands. 

Like when I didn't pull permits, I had to rip on the cabinets and tile and then abate asbestos that was under the kitchen floor tile. 

It's honestly better than paying hundreds of dollars a month to a bookkeeper and wondering if they are doing it right, since only a handful of my transactions are every in doubt.

You may need to spend a few hundred dollars to get a lender name change if the new lender requires that, but depending on when you rate locked you may still end up saving money with a new lower rate.

I'm not sure of the local job market etc, but maybe someone who wants to save on rent would pay a couple hundred a month to bring in their camper/RV/Travel Trailer to stay in the area for cheap...that's about it I think.  

I remember being on a panel discussion with hundreds of audience members who asked various questions.  

Compared to the US, the financing is different (if you need any), the legal system is different (you need to vet the parties), pre-construction works differently (if that's what you want to buy), the buyer/seller psychology is different, ...It's important that you get the needed knowledge or work with people who have it and have their interests aligned with yours.I have replied to hundreds of posts about investing in Mexico over the years so you might find some what you look for there.