@Lorna170 I actually didn't mean that he would have to have an official cohost or property manager on his listing. I just meant that it is necessary to have boots on the ground because there is more to running an Airbnb than communicating online with guests and having the place cleaned and restocked.
Someone to assist the guests if they need hands-on help, to make sure nothing nefarious is going on, like a party or 3 dogs in a no pets listing, etc. It could be a neighbor, friend, family member, or like you have, a couple who look after all that stuff for you and who are paid privately, not through Airbnb.
It's just that a lot of new hosts might have an unrealistic idea of all the things that can come up, thinking it's just a matter of them handling the bookings and getting the place cleaned. That's what I was trying to get across, but I guess I wasn't clear. To me, a co-host just means someone who is the local overseer and problem solver.