One side we have an elderly widow - dream neighbour! Super quiet and lovely.
The other side is a couple that seem to be in their late 20's with a baby and a dog. We have had some issues with them in the past (nuisance barking from the dog & they used to be noisy some nights when they got home from the pub), but they're no trouble now. We have come to an understanding and they addressed the issues we had.
Our street is generally really quiet which we love as we are quiet folks ourselves.