Unless you elect special tax treatment they have absolutely zero effect on taxes.  

Medical students, Physicians Assistants on rotations, people who want to be close to family member undergoing long term treatment, etc would also be in need of flexible term furnished housing. 

I had an extra bad one once and had to do three treatments.

I I would reach out to local rehabs and treatment centers.

STRs have unique treatment compared to long-term rentals and not all CPAs fully grasp the difference and planning opportunities.The magnifying glass up top should put you on the right path and give you some CPA names to jot down. 

Will a termite treatment once be enough or is this something I will have to do every few years or so?

For all you know this person could be prescribed this as a treatment plan for mental/physical pain, anxiety, or insomnia.All of our local rentals are 4/20 friendly and located in Denver where responsible consumption is allowed and there's a true culture around it. 

The longer it grows due to improper treatment the more expensive it gets. 

You can clean the stove and range hood really good and run an ozone generator for several treatments .

And tax treatment of renovations on properties is the opposite of simple.After the holidays, I'm planning to write a long post illustrating why taxes are so difficult to estimate.