Hi @Nao2,
This is what Airbnb says about security cameras: https://www.airbnb.com/help/article/887/can-i-install-video-or-audio-surveillance-in-my-listing
"We expect hosts to respect their guests’ privacy. You must notify your guests about any security cameras or other surveillance devices at or around your listing, and get consent where required.
The use of surveillance equipment may also be against the law in some places, so make sure you understand your local regulations."
If this host did not inform you about the cameras, I would definitely encourage you to flag this host and the listing for review by Airbnb.
The appropriate department will then review this host. Please visit the following link with instructions on how to flag this host.
https://www.airbnb.com/help/article/4
You can flag the host's listing by going to his listing and below the "Wish List" box there is a link to "Report this listing"
Here is an example of flagging the listing: https://goo.gl/0E5OnY
To flag the host's profile, click on his profile photo and you will be taken to his profile page. Under the description of the host, there is a link to "report this host". Choose “other” and explain the situation.
Here is an example of flagging the host: https://goo.gl/F2hcek
David
Superhost Ambassador ~ Host Club Community Leader ~ Community Expert ~ Experienced Co-Host