New gains attributed to your investment are tax free if you stay in the investment for at least 10 years I believe. 

It's pretty details and goes over different market attributes that you should pay attention to.

I attribute this to wanting to do the work, but Not the administrative work.

Should it focus on personal qualities/attributes or other accomplishments in REI and/or professionally?

One great attribute about this financing is that contract terms can mutually benefit both parties.

Every buyer has different attributes that are advantages and disadvantages. 

For the past year and a half, we have been very fortunate with arrival and departure times, and we attribute a lot of it to very specific and direct instructions before and during their say (Reminder texts to "please NOT start the laundry before you folks leave tomorrow at 10 am", for example).

Wish I could remember who to attribute that quote to. 

My guess though is that this may be a sort of gray area—could the damage be attributable to a “guest” of the tenant since he was only there because of her?  

Thus far I came with the following metrics:Rental Yields (historic and projection)Mortgage Interest Rates (historic and projection)The spread between the two aboveTaxes (Upon purchase, tax on rent and on capital gains)Tourism (trend)GDP per Capita (historic and projections)Median purchase price per SQFMedian rental price per SQFMedian Free income (after income tax)Nearby Hospitals (existing and planned)Nearby Airports (existing and planned)DoingBusiness Score (various criteria related to Real Estate )Population Growth rates (historic and projections)Nearby Public TransportationDivorce RatesAverage Marriage AgeJob GrowthHousehold Debt (trend and projection)Country Debt (trend and projection)Is there a financial institute that will refinance an asset I purchase at 75% LTV or more (implementing BRRRR)Owners:Renters RatioTenant or Landlord biased law systemHi Tech corporates planning to open HQs in the areaCurrency Inflation/Deflation (historic and projections)Construction permits (historic and projections)Constructions starts (historic and projections)New apartments soldNew apartments median priceExisting apartments SoldExisting apartments median priceTotal debt through Mortgages (historic and projections)Unemployment Rates (Historic and projections)Average number of dates a new/existing apartment is for saleOther demographic attributes and preferences of the locals Thanks,Alon