I know that this topic has been discussed many times but I wasn't able to find a satisfactory solution.
I have 1 property which is listed on multiple sites (AirBnb, HA, etc.). Is there a lightweight solution that helps me not having to sync the calendars pairwise? I also have a cleaning partner and it would be helpful if I only need to share her just 1 calendar URL rather than 3-4 calendars.
I found a couple of services on the internet, e.g. BookingSync, etc. However, they seem to be an overkill (and consequentially charge a lot) for what I need.