Hello there!
You can find more information about this topic here:
https://www.airbnb.com/help/article/3400
In particular:
"For your space to show up when a guest searches for Rooms, it needs to be categorized as a Room in your listing, plus it needs to meet these criteria:
- The space listed is a bedroom, with a door, that is intended to be exclusively used by the guest during their stay
- The guest shares access to at least one of these common spaces: bathroom, kitchen, or living room
- The listing’s Host must be a person using their own name—no business names, nicknames, or other names are permitted—because guests are sharing your home, so it’s important that they know who their host is
- Private rooms in multi-unit buildings, condos, townhomes, and apartments may be considered private rooms if they satisfy the requirements
"
I checked your listing, and I see it's shown as a 'Place to stay' currently, even though it seems to meet all of the requirements.
In this case, I believe you should contact Airbnb about this to have your listing reviewed.
As you can read in the same article attached above:
"If you make updates to your listing to meet the requirements, you can contact us to review your listing to determine if it can be displayed as a Room to prospective guests. "
Here's how you can contact them:
https://www.airbnb.com/help/article/1542
I hope they will review it soon, and your listing will be shown as a proper room!
Vincenzo