It really depends on the neighbours. I've lived in a court and although there was slightly less traffic than most streets, the neighbours weren't necessarily quiet. On side of us I am sure the neighbours were dealing drugs or doing something dodgy. They would have many visitors late at night come and go and also regularly have drinking sessions in their back yard, talking very loudly and generally with music playing... and not just on weekends. The other side of us was a bunch of teenagers that obviously didn't have jobs. They were ALWAYS home and they had a couple of old supra's on their front lawn that they played with all the time... starting them up and revving the hell out of them with their loud exhausts. They also had a mate that would visit regularly who drove a V8 stato and you could almost guarantee he would rip a skid every time he left.
Other than that the lack of traffic was great... but like I said, street or court, it really depends on the behaviour of your neighbours.