I think it would be a great help if Airbnb could add an iCal or ICS attachment to the "Reservation Confirmed - xxxx" emails that they send out when a resevation is confirmed.
This way we could add the reservations to our Outlook etc calendars that we use every day and not have to keep checking and getting numberous emails from them about upcoming reservatiuons etc...
I have several Airbnb properties and having to check through all the calendars to keep up to date is a problem and causes errors.
I use Outlook - but I'm sure that others use Gmail Calendar or Apple Calendars etc - having an attachment like this would allow us all to choose which calendar system we use.
It could be made optional too just by adding a "send me calendar attachments - Yes or No" buttons...