The chart refers to LVT(LVP) products ( though the Adura may be a WPC which would be an engineered product).

Don't just settle for a 0% return, that's like buying a fancy car with no engine—it might look good, but it ain't gonna take you anywhere financially. 

But for me, I know what lifestyle I want to live (it's not Bezos-level), and we've reverse-engineered the math to see how many properties we need to achieve that lifestyle when we want to retire in 15 years or so. 

You need an engineer most likely. 

Buy or inherit and hold all their lives while working the properties for income.I've seen teachers, firemen, software engineers and all sorts of people utilize both strategies successfully.

Site engineer?

Architect, engineer, title 24 for energy calculations.

However, if the trend is for marble or perhaps engineered flooring, your buyer will take your wood floors as a minus, as they will desire to rip up your restored wood floors, considering it a renovation!

So try to communicate as much as you can through those 3 parts of your listing to optimize your performance on the airbnb search engine. 

Less complicated, you don't need to be a SW engineer.