As the map provided above indicates, standard view rooms at Jambo have either pool view or savanna view and a little more than half the standard view rooms have savanna view. In some cases, the view has the people pen issue but for most, the views are actually decent and many rooms are nearly as good as many savanna view rooms.
As far as a room location request through MS goes, the best one to make if you have standard view and want a savanna view, is to request a room on the Kudo Trail side of building, because all standard view rooms on that side have savanna view.