Hi magic --
I recently returned from AKL and was on the third floor of the Kudu Trail guest rooms. I would recommend the second or third floor, however, because these floors allow the best and closest views of the animals (first floor is too low, fourth and fifth are too far up). Over in the Kudu Trail, we saw lots of giraffes, and had three zebras who liked to snooze under our balcony every morning! We also saw plenty of birds (cranes and ostriches), kudu, etc....
The resort is arranged in a huge semicircle, and I think your best views are going to be facing inward, toward the main savannah and arusha rock. Zebra trail is closest to the shop, the pool, and Boma, Mara, and Jiko. SO, I would recommend second or third floor of Zebra Trail, facing inward. Have fun!