During check-in guest told me he doesn't like the view from the window and the flat is smaller than he expected and he will stay only the first night here and I told him he may cancel other night and leave, if he doesn't like it (I believe I have pretty good pictures of the apartment, showing it's amenities and size. I was also not advertising the flat as the one having picturesque view).
After several hours got message from support that the guest cancelled and Support agent wrote that he explained them that "the house is bad, noisy and smelly" (not sure if he means whole house or only my apartment).
Support agent told me since we cannot agree on refund, they will make decision with accordance to their policy (my policy is flexible but the guest wasn't refunded for 27-28 September night).. Currently they are waiting for documentation.
Cancellation may be common for experienced hosts, but that was my first one (started in September). I'm nervous, do I have chances to lost my money? I had 6 guests before him, no one complained and they seemed pretty satisfied.
In answer to support agent I explained why it is unlikely to be noisy (far away from road, no construction sites nearby, neighbors - old people) and why it should not be smelly (cleaned, sanitized and ventilated - every window was opened - during several hours before guest's arrival).
Anything more I can do to protect myself?
(also guest was literally last minute guest, he arrived for check-in after 3 hours after making reservation and he was 1 hour late than we agreed. I even asked Airbnb to contact him as he had foreign number and I couldn't call him to check if he was lost with no internet or what happened to him, while he was not answering Airbnb messages)