If you have a view of DD, that is a great place for birds. I have posted a SS walk on my site, and I photographed a great blue heron, as well as other birds there.
Closer to the main area, there were some swans on Sunday. And really, it depends on what type of birds you are looking for. If you want the bigger water birds, then the DD/PI view is best, IMHO (though I agree, there are birds everywhere).
I don't remember if that area would be quiet at night - I've stayed there in townhomes when it was the DI, but I don't remember any real noise.