This puts both you and them in an uncomfortable situation, as you are inferring that they didn’t already price it fairly.Don’t make a list of the flaws of the property and use that to try to talk the seller down.

Every system you try will have flaws, or you may salivate over a feature that appears in other software.

I've read a lot of bad information on how some gurus are promoting techniques that are flawed at best, fraud at worst.

Ok, so I see this might have been a design flaw in the original build so there isn't much you can do unless you rip it all out.You could have it all scoped and see what's what so you can get an idea of what you are dealing with.You could comp the guests a night.

Many times their cash flow calculation is using flawed underwriting.  

Small shop brokers that have access to multiple programs so that they aren't beholden to one or just a few loan programs will typically get the most competitive product for the borrower. 

I don't immediately see any reason that their basic home value and rent indexes should be considered fundamentally flawed based on that connection.

I typically will book tax entries as an accrual so that they don't affect the operational accounting.My reports do not tie exactly to my tax return as there are temporary and permanent differences between tax books and accounting books.

Also the idea that occupying a 'piece' or 'portion' of property allows for AP is flawed.

I signed up for the paid version of Stessa through biggerpockets only to encounter flaws in their software, connection issues that have been ongoing for 10+ months, and basic feature missing that leave me dumbfounded.