Yes I can see you recently became a co-host, but assumed you haven't had experience as a host as you don't mention it and I thought by your questions, that you hadn't. I apologise if you have hosted before.
As I mentioned in my earlier post, I think co-hosts who set up a listing for hosts under their own profile is doing the host a dis-service as you are then making it impossible for them to host themselves without losing the ratings and reviews.
If you understand the importance of setting up listing under the host's name, why have you set up the listing you are co-hosting for under your own profile?
The host sets up and furnishes the property, they pay the bills, they take the risk. It is their business. A co-host is simply providing a support service for the host. That's why it is right that the reviews and ratings are allocated to the host.
I am sure you will be a great co-host, but part of that is heloing hosts understand the importance and benefits of setting up the listing under their own profiles.
As I mentioned in my earlier post you can link to these listings in your marketing so other hosts can see the reviews and understand the quality of your work.