I've stayed at AKL 3 times, each time in a savannah view. Admittedly, all of those times were at Kidani Village, which gets only one of the savannahs, I think. Each visit was amazing; smells, no way! The best experience was when I took my mom, who was in her 70s at the time (she turns 80 this weekend!) and I asked for a room close to the elevator. We lucked out and got a first-floor room as well as close to the elevator (just off the lobby, really). I'm telling you, it was tough tom leave the room each morning to head to the parks because of the animals! And one day we were park hopping and came back to the room midday, when they were feeding the giraffes, and it was so fantastic to watch, well we definitely spent more time in the room than we had planned. It was such fun to watch them, the giraffes were clever enough to realize that the truck was full of the good stuff they were putting in the feeding stations, and they went straight to the truck to get their food! Mom was happy just to hang out on the balcony and watch the action, and there was plenty of it!
I will say, though, that the first 2x we stayed there, we were further down the corridor towards the end of the "necklace" and we only saw a couple different kinds of animals. Still cool, but not as great as staying near the center of the building.