HI Emma & good luck.
[1.] Make sure the standards of the host/ other party do not vary from yours.
[2.] Make double-sure, that, both of your goals/ aims align.
sleep on it, during entire w-end.
[3.] Now is the time for triple-surety
as 'all things airbnb, listing management, and cohosting duties' on paper/ research; when faced with multiple problems [other host, guests, airbnb, automated system, human moderators, fraud, delays, loses, this and that] can make this little bit more difficult than it seems.
I don't want to rain on your parade, however better to know risks first 'than just profit / good things & standard sell-buy issues'
Can be done, many do it and it takes a lot of patience;
on other hand many break up, find it so hard and
some end major conflicts.