If she is a fair dealing and decent person, what I would do if it actually created a meaningful hardship for me (since I am also a fair dealing and decent person) is that I would discuss exactly this cost I bore / will bear with her and ASK if she was cool with an appropriate charge.

My parents agreed to do a 80/20 split which is cool of them and they were excited to see the ROI as well.

@Jessica Tavano Airstreams are so cool!

Some cool light/plumbing fixtures?

And, I am calm, cool and collected. 

The problem is that, the tenant has to open the bedroom door in order to cool down the bedroom.

I want to ask your opinion on which strategy to take to increase profitability I’m thinking if I should sell my CA rental now before I have to pay capital gain tax Cuz I’ve only rented out 2.5 yrsStill within that 5 yrs time, that was my prior residence...next thing is...A) hold on to the $300k cash and wait out a yr, but when market cool down a bitB) buy now in Austin and Orlando C) invest in vanguard funds If I sell, I’m hoping to buy 2 newer properties in the 1990s-2000 built My current rental is 1950s built...old plumbing, and outdated exterior...I feel major maintenance is bound to happen in next 5 years.

For a STR, you are heating, cooling, providing WiFi etc.

I think a cool idea is  to have them "invest" with you and actual start learning about how the numbers works.

My Dad was so Cool I mean who would do that.