I find single ADUs are mostly being added by people with minimal RE investment experience often without a clue as to the value that will be added by the adu addition.  

If you haven't already, you should research the stats on Furnished Finder to see how many people are looking for a midterm rental, how many units are currently available and the configuration and prices hosts are offering.

This is why so many people earn large sums of money quickly (lottery, sports, entertainment, etc.) and end up broke.Take Dave Ramsey's Financial Peace University.

You'll meet a bunch of fellow capital region investors and people who can help.

The only caution I give people is to make sure they have a solid income to where they won't feel the pain of the loan. 

Dumb Debt also means that the owner takes on recourse debt and personally guarantees it instead of non-recourse debt or other people’s debt (OPD) or cross collateralizes it with highly appreciated assets with low debt to value ratios.

We have had people leave early and in some cases I did give them a bit of cash back due to the circumstances.

There are sites out there like passive pockets as well as this site where you can find out a lot from people who have invested with that fund.

No, banks do not allow a seller held second now a days due to risk and new guide line changes. 

People newer than you can get a lot of insight from that.