Did you get anywhere with this? I was looking on airsorted but would be interested to hear if you'd had any experience elsewhere.
Portico are very keen to manage, and they are local
I currently have my apartment on AirBnB, I did see the co hosting, however it sounds like you may need someone who can be more full time, Ie key hand over, turn around of the property. I am currently doing this on my own, which is ok, but I could not do it full time. Good Luck with your search, Portico are expensive.