Most very successful STRs seem to have direct booking options, they are opening their properties to the YouTube Airbnb influencers to get more publicity, they are creating regular content through their own social media channels, etc.  

Worse case it could be converted to regular apartments.

Just get a regular hot tub, I promise it'll much cheaper than a lawsuit. 

When I do my own units, should I charge a really low price to my own property to make it self sufficient as it would then cover its own expenses, or should I charge the regular full price for cleaning and pay myself the entire cost for cleaning to boost my income?

I preach about this regularly to people looking to invest in Texas and San Antonio ore specifically.

We had jobs there and we took summer classes to lighten the load of the regular semester.

Here in DFW we have an amazing network so our club also holds in person events regularly.

Dave M's regular co-hosts of Kathy, James, and Henry offer diverse regional and investment styles. 

As with any system quality install and regular preventive maintenance are required. 

Depending on the facts and circumstances of the agreement, it could either be treated either1) the sale occurs as of the original agreement date, and then your taxable gain is generally spread out over the life of the principal payments as an installment sale (although I should mention any depreciation you've taken on your property could affect this), or2) the sale does not occur until the lease option is exercised, and gain reported at that time.