I've also had guests buy their own TP and trash bags and leave the extra.As for toiletries, I leave the traditional "Starter Set" of shampoo, a little bar soap, conditioner, and lotion  (the tiny hotel bottles). 

Quote from @David Martoyan: Has anyone here successfully adjusted their strategy to focus on finding deals that don’t follow the traditional ARV formula?

But I’ve never personally invested in real estate using business credit more traditional for my first property, so I’m always curious when clients say they want to use this funding for a real estate deal.Here’s where I get stuck:Real estate deals can be risky, especially if the project takes longer than 12 months to close or unexpected costs pop up.With prices climbing, it feels like the margin for error is smaller than ever.Would you recommend someone use business credit to invest in real estate?

You would only pay taxes on all passive investments in a traditional SDIRA at distribution, unless you have a mortgage, then the portion of the income derived because of the mortgage will be subject to UDFI (unrelated debt finance income) which will trigger UBIT (unrelated business income tax). 

Is there a reason why you are set on a traditional duplex? 

If you go with your traditional family insurance premiums will be about twice this, since they don’t specialize in this market.b.

While some buyers may shy away from the 7.125% interest rate, others who are familiar with the "Subject-To" strategy or are more flexible on financing terms may see it as an opportunity to acquire a property with decent equity and no need to qualify for traditional financing.

Is STRs the way to go in Hawaii or maybe just traditional LTRs instead? 

I'm 37 and about 8 years into my emergency medicine career.

These lenders often have more flexibility with underwriting and may not require traditional income documentation.