Both rooms will have coffeemakers and refrigerators (no freezers) but the Kidani studio will have a little kitchenette that includes a microwave, toaster, sink, and paper bowls and plates so that you can cook meals that are a bit more elaborate than cold cereal, for instance. (If you search the DVC Resorts board there's a thread from a family that cooked all or nearly all their meals in a studio for more than a week!) The coffee pot will be a drip pot - may be 4 cups but you can request the 10-12 cup size if you want.
Also, the Kidani studio will have a queen size bed and a full size fold out couch. Since you can fold the couch up during the day, I think it would feel bigger than the hotel room with its two queen beds. I don't know what the actual square footage difference is but I'm sure someone else will have that information!