I think it's the busiest area in Kathmandu, so many tourist- including me, so many cars- horn all the time, so many shops- good for shopping, so many money exchange store and so many restaurant- good for tourist. I stayed in this area because it's quite convenient for shopping and eating although the food price was higher than other areas. But you can find some cheap restaurant in this area as well. ^^
Although there's lot of pollution here but that's Thamel, I think it's something exciting like a new experience. Lol But you can get away from this crowded and full of dust street by going to the Garden of dream which is just a few steps away.