The only DVC villas with bunk beds are the 3 bedroom Treehouse Villas at Saratoga Springs.
Most DVC Deluxe Studio villas have one queen-size bed and a full-size sofa bed. Vero and Old Key West have two queen beds. Grand Floridian and Wilderness Lodge have the queen bed, sofabed and a small fold-down sleeper for a 5th person (child.)