Technically that is not correct, and could bite us in the butt, but I haven't had to fight it yet....After they vacate the property, within 45 days, you need to send them a final accounting of the damages, cleaning, etc and how their security deposit was applied..

Let them leave asap so you can clean up and move on.

The same day they moved out, my property manager e-mailed me pictures of the now-vacant property, and said the bid for any "Make-Ready" items (paint, cleaning, yard, etc), would be coming soon.  

It is totally possible to manage booking/payment/access yourself and contract out the cleaning and maintenance.

In the end their investors will move on to the next thing the oracle talks about and you should be ready to clean up Wall Street's mess...again.

Does the home feel fresh and clean?

For 3+ families it'd also be good to make sure they have a current green card (issued by the state of New Jersey sort of like a certificate of occupancy renewed every 5 years indicating that the building passes whatever requirements the state imposes). 3 story buildings with 3 units need to have a fire escape, exit signs, self-closing doors, etc.

My contractor was cleaning out a property today, and I get back from the store where I was buying garbage bags for him to use. 

Assuming it is clean have the Seller sign a deed to you.

Water used or "wasted" is cleaned and reused in many cases.