@Huma0,
I apologize from the start, but the following is long-winded, because it's a topic that is important to me, and I've spent a good bit of time looking into the details.
With regards to infection control, cleaning and sanitizing are not synonymous. Cleaning is the process of washing away visible/tactile dirt and grime, and sanitizing is destroying bacteria and germs that cause cause disease. A person can sanitize unwashed hands, and the germs will be cleaned, but the hands will remain dirty.
I have spoken about how nonsensical it is to recommend cleaning a porch or balcony ceiling when they are typically outdoors with air flowing freely throw them. This is inconsistent with the recommendation to open windows to let air flow before starting to clean a space. In my research, I have not found any documented findings that purports droplets and aerosols which have floated to the ceiling in a sneeze cloud or powerful cough to have later dropped from the ceiling and remained in the ambient air like other respiratory expulsions.
Unless the place is located in area with very few pollutants and restricted foot traffic, it is almost unattainable for an open porch or balcony to remain clean beyond the time in which it was being cleaned, because it is one of the more transient areas of a dwelling. Besides natural air blowing through, for many properties, porches are the primary location for deliveries, solicitations, and entrance/departure by a variety of people.
Currently, the enhanced cleaning protocol is only meant for non-homeshare spaces, because it is more difficult for hosts to adhere to some of the recommendations when there are people from different households living in the same space. As you've pointed out before, ensuring that homeshare guests are following public health guidelines while away from the property is nearly impossible.
I have had four bookings since reopening at the beginning of this month. I do have IB turned on, but have strict booking and guest requirements to use it (three days lead time, profile photo, verified government issued ID, and recommendation from other hosts). Those who do not meet the criteria have to send a booking request. In my reservation greeting message, I informed each of them that we follow much of the CDC cleaning recommendations, and that I would wear a facial mask and maintain social distancing when I greet them in person and show them around the apartment. None of them inquired about cleaning prior to booking, and only a question has been asked just once in response to my message. The guest thanked me for taking the extra measures, and asked how long would the space be vacant before they arrived.
I have also stated in other CCs that only a small percentage of hosts in my area with comparable offerings have opted-in to the cleaning protocol, and many of their calendars reflect that they are getting bookings. I think that guests look at the reviews of past guests to speculate if a space will be clean, and not the enhanced cleaning badge. Also, staying in an Airbnb can provide guests more assurances of cleanliness compared to staying in a hotel or resort, because either the hosts will provide additional supplies for the guests' use, or guests can purchase or bring their own supplies.
Regular people living real lives and traveling from home will/should not expect their Airbnb to be cleaned and sanitized to ICU specifications.