We are considering stepping in and trying to buy the place, but looking for some guidance on STR and what kind of money this place can bring in. 

I want to profit off the interest rate and perhaps offer 6% rate on what is left on the mortgage.

Are there any investors between the ages of 18 and 25 in this group?

This is why renting to family or friends is generally a bad idea.

I would save up more and target a house hack. 

Do you know your actual amount of taxable profit on the flip?

Here are a few suggestions on how you can maximize the wealth of information available: Check out the blogs and podcasts, or take advantage of the search feature (magnifying glass).

Very much appreciate any advice or recommendations on how to approach this conversation/negotiation. 

need to get a better range on your ARV and not enough info to judge. 

It will take some work and flexibility on design, but it isn't that hard.Here is a pretty good article on the subject of furniture depreciation - https://www.business-accounting.net/how-to-depreciate-furnit...Get with your CPA to make sure you meet all the requirements.