As for the comp methodology, that sounds pretty straightforward to do.

But they both worked for the same company, were supposed to use the same methodology and certainly had access to their own prior results for the very same property.If we did not need to adjust the total rehab costs, we would have only had the first report.

Investors in the STR market who do not create their own methodology for direct bookings risk getting “killed” in the next economic correction.  

What's the best option with low DP then the traditional 20%.. lastly of you have a awesome lender who is creative and can make it happen, please share contact Info. thanks  Sharing this article I published last year here on BiggerPockets on this exact topic - things are generally the same as when this was written up last Fall - your best bet is likely STR-friendly STR Lenders - ones that will use forward-thinking methodologies like AirDNA, etc. - probably about one third of DSCR lenders are STR friendly at this point (most will not do STR or have very conservative UW)Short-Term Rental Loans: What Are the Options and How Do DSCR Loans Stack Up?

Definitely have learned that methodology. 

I have no problem investors losing money or all of it if they don’t have an approach or methodology.  

Rent Manager's interface is ancient compared to Buildium.

But then again I don’t have a vested interest in their buying in to the hype.The other side of the “nothing down” methodology is that in many, if not most instances, being able to put together a nothing down deal results in paying over market value for the subject property, or over market interest rate for the financing.  

@Sage WeissInfinite Banking is a strategy and methodology that leverages the amazing benefits (see below list) of dividend paying whole life insurance.

Of course, if they are ancient single pane windows, it may make sense to replace them, but by itself a stuck window can usually be fixed quite readily.