The 3BRs at Kings Creek are going to be one of two configurations. In the cottages where you will literally have a whole cottage. The third bedroom is very small, but could be perfect for one set of the grandparents. In the Estates, you will have a four bedroom house with three entrances. The first opens to the right half which is a dedicated 2BR with two stories having the living area on the first floor. It will lock off with the bottom floor of the left side and have a separate outside entrance. The final bedroom is up the stairs from the first floor on the left side and has a third entrance.
I personally liked the Estates very much when staying there.
Governors Green is fine also. I've not stayed there, but done a tour.