@Simon159
This is a serious subject - and even more serious when you add in third party/management liability etc. (and I am assuming that your 'property management company' is a legit registered business - then you will also have your own public liability and property coverage insurance).
@Helen3 is absolutely correct - look to your clients insurance if you want to insure for 100% coverage. Any 'guarantee' from Airbnb comes with loads of communication to Airbnb, then providing comprehensive proof, recording, original receipts, before and after photographs and sometimes police reporting. And sometimes resulting in no recompense or only 10% of the claimed value.
Do not rely on it.
Your common sense and some preventative measures (no expensive or personal items in the property, comprehensive inventories, personal check-in and host presence etc.) will be your best insurance against problems, damage or theft - and even then it is not possible to prevent or protect everything all the time.
Best Wishes.