We encountered mouse during our stay! Yet the host said it's “very common” and didn't want to pay a single penny as compensation. The carpets were also smelly and needed cleaning.

Full details:
We encountered a mouse at midnight a few days into our stay, causing us not being able to sleep until 3am. The host brought in pest control the next day and some baits were set, but the pest control agent said it would take an uncertain period of time for the mouse to be killed—it could be days or weeks. We thus wouldn’t be able to know when exactly the mouse would be gone. The host did not mention any additional options for us to navigate this issue. Therefore, for the rest of our stay (~9 days), we always had to keep our food covered, suitcase closed and our bedroom doors closed to keep the mouse from coming in (the bedrooms can become smelly due to this, with the smell likely coming from the carpets). Furthermore, we were scared of our furry new *roommate*, making us easily startled by all kinds of noises in the house (which happened quite a few times).

With all these inconveniences, at the end of our stay, we asked the host to at least provide some compensation. But the responses from her were very disappointing. She said the mouse issue is “very common” and denied our inconveniences by saying “extra items” such as closing the doors were our "personal preferences.” She didn’t want to compensate us at all, so we had to reach out to Airbnb customer service for help.

For mice issues, Airbnb has a policy to refund 30% for each night affected. Even with the existing policy in place, after arguing back and forth, the host was only willing to pay for one night, again denying all our inconveniences during the rest of our stay. Besides the money, it was also very upsetting to have to deal with this during the vacation!