Depends on how lucky you feel. Savanna view is better than standard. However, half the standards at Jambo have savanna view as a result of conversion of a number of savanna view rooms several years ago. Those views are considered a little worse than savanna view and most are fine. Thus, if you get standard at Jambo and request room on Kudo Trail side of resort (all standards on that side have savanna view), you have decent chance of getting savanna view for satandard view points.
At Kidani there are also standard view rooms converted from savanna, aalthough the converted rooms are on the Pembe savanna which does not have giraffes, but you still see animals. Best chance of getting a savanna view there with. A standard view room is to request room near the Pumba elevator, but be aware youwill have a very long walk to lobby and bus ration from there.