@Etem6 An alternative to @Debra300 's excellent suggestion is to have 3 listings.
Listing A - as existing
Listing B - 1 bed shared place
Listing C - 1 bed shared place
Then link the calendars A to B and A to C to avoid double bookings.
You will keep all the reviews of Listing A and could refer people to these in the descriptions of B and C.
The only issue with Debra's suggestion is that people may get confused by the review and book a 1 bed shared place thinking it is all for them!
By the way even if you delete the 2 bed listing your reviews will stay against you as the account holder.