You will need to learn about the local laws, advertise, background check applicants, meet them for showings, answer questions, get a good lease, answer the phone at any time, arrange for repairs, do inspections, manage finances, manage an LLC, and more.

It is all public information, so technically it is free to get, but the Ttitle companies put it in a useful format.  

(e) While a person may examine and consider a criminal background check, credit history, or rental history in reviewing an application for rental housing, the person shall review and consider additional history in reviewing an application for rental housing, the person shall review and consider additional information provided by the rental applicant, including, but not limited to, personal references, recency and status of any evictions, and any actions taken by the rental applicant to resolve past evictions, credit challenges, or alleged damages, the recency and severity of any convictions, the violent or sexual nature of any prior convictions, the facts or circumstances surrounding criminal conduct, the age of the applicant at the time of the conduct, the age or vulnerability of the victim of the conduct, evidence that the applicant has maintained a good tenant history in the intervening time, and evidence of rehabilitation efforts, consistent with state and federal law, including, but not limited to, fair housing laws.

I'm kicking myself because I was having some technical issues with the format when I tried to update the lease document in MS Word.

Also if they use house hacking they would have the other tenant that's paying rent would also be technically paying half of the mortgage as well.

You may have the tenant on a technicality in that they didn't report the broken disposal and can't claim they didn't have time since they had time to pack their belongings and move out.

There background was sketchy but they had cash on hand.

Sellers are still nuts.Just technically speaking... around 6 months inventory is considered a balanced market, less than 6 months is a sellers market and more than 6 is a buyers market. 

Background and Credit check required2.

Concierge does not technically "recommend" using a particular lender or agent.