One of my DVC memberships is at AKV and as of today (for reference for your 2015 trip), both the Savanna View & Standard View Studios are fully available for Christmas 2014, both at Jambo House and Kidani Village.
AKV is absolutely beautiful, a "spared no expense" resort with lots of details in the best tradition of Disney.
AKV has 2 separate buildings, "Jambo House" and "Kidani Village", about a 10-minute walk apart. (A shuttle van also runs continuously between the two buildings.)
Jambo House is where most of the action is. It has the hotel's grand lobby, two table service restaurants, a bar, the food court, a larger pool, and a larger store.
Kidani Village is quieter. It has one table service restaurant and a small store. Its pool is better for smaller children, having a small water park style play area. Its parking is underground, making it more convenient, especially in the Florida sun.
If you want to be in the middle of it all, go with Jambo. If you want to get away from it all, go with Kidani.