I have stayed at AKL in just about every type of room from Standard to Club Level, and I absolutely LOVE their standard rooms. There are viewing areas everywhere, with big comfy chairs for the whole family, both inside the halls (where you will find all kinds of nooks to explore) and outside on balconies with big ol' rocking chairs AND they are never crowded.
My favorite room ever was a pool view room (for just $10 more than standard, but we were upgraded for free). The view was breathtaking!
Watching the animals from your own room is nice, but it is never private. There are others out on the balconies and video cameras everywhere, so to me, it makes little difference if I view the animals from inside my room or when I step out into the hallways. There are so many comfortable places to view all over the resort.
AKL is an amazing resort. My tip would be to ask for a room as close to the lobby as possible. If you end up at the end of one of the long halls, the walk is disheartening after a day at the parks. Plus, the lobby is wonderful. There are standard rooms near the lobby, and that is where I prefer to be (either with a pool view or standard view). When our balcony faced a road, trees and foliage allowed us to enjoy it still. I would not hesitate to book a standard view there. I think you will be really pleased!