Yes, concierge level is only available at Jambo. Those staying at Kidani have no access to the lounge at Jambo or its concierge services.
I believe there are only 5 2BR lock-off units available for booking on points so there is a lot of competition for those units. They are a result of the conversion of former AKL rooms to DVC units during the first phase of AKV at Jambo.
As the previous poster said, you can not book a concierge level stay in Kidani. There are only 5 two bedroom lock-off units available for Concierge level room bookings, all at Jambo.
If you are looking for a conceirge desk, like to help with ticketing or dining reservations, those are located in the lobby of both Jambo and Kidani.