Hi Nicky,
You’ve already communicated your safety concerns about hosting a toddler and a baby, but the guest hasn’t updated the booking to reflect their presence. Reiterate the need for transparency in guest numbers due to the safety risks, and if they don’t respond, escalate the issue with Airbnb, citing the unsuitability of the home for young children.
From Airbnb’s policy, while infants (under 2) may not count as extra guests, children should be added to the booking. Ensure you document all communication for Airbnb support.
For future bookings, you can update your listing to mention specific restrictions related to child safety and suitability, which will provide more clarity to potential guests. Additionally, you can request to cancel the reservation due to house rule violation given that it has been disclosed on your Airbnb description and houserule.
I hope this helps.
All the best,
Upfish Management