If you uncover that answer, it may shed some light on the investment (maybe it's good info and it satisfies my skeptical approach)I have found the biggest three seller motivations (with landlords) are:1) Tenants are subpar and current owner is tired of managing (in this, you're inheriting headaches, eviction, and much higher repair costs than you expect). 2)  An estate took over and just wants to get it gone (in which case there is probably a back balance owed that needs to be flushed out along with a general lack of property knowledge). 3)  My personal favorite: the Owner bought via tax sale deed (and therefore does not want to be a landlord, just wants his investment + reasonable return).If everything checks out, it sounds like a great deal bud.  

Does this sound attractive/doable to anyone?

You can still do a full background check on your renters.It sounds like you have essentially made a duplex out of a SFH.  

Looking forward to engaging with you!

Does that sound right?

Additionally: whatever you do about this, try to stick to email (other written communication) that you can later go back to in case the tenant decides to claim that he was not fully reimbursed.(1) Ask the former owner for any Lease he had with this tenant (it sounds like you were this tenant's landlord for 6 days - I'd ask for this document during the purchase period.)  

At the time it sounded like a good idea. 

It would be higher interest but that would likely not be that long from the sounds of your situation.

Sounds like they are trying to liquidate some and this one might be the property that they have used as their scapegoat?  

It does sound like there could be a good opportunity with condos there.