I am not 100% sure, but I can't imagine they don't have king beds in the preferred buildings. You could go online at the Disney website, when the chat feature comes up, you could ask a Cast Member. I found the online chat to be super helpful.
I also follow
WDW Prep School online. They have lots of great info. The link I added it directly to their CBR page.
When you look at the CBR Rooms on the Disney Webite it says for Preferred Rooms:
Views of the Resort Hotel, Courtyard or Woodlands
Close proximity to Fuentes del Morro Pool and Centertown
2 Queen Beds and 1 Child-Size Pull-Down Bed or 2 Queen Beds
Sleeps up to 4 Adults
This is the ONLY room type that mentions Centertown and the Fuentes del Morro Pool.