Trust me, Hu tong is not unique in Beijing.
In the northern part of China alleys were called "Hutong", in the southern part they were more likely addressed as "Xiang" (sounds a little like 'Shiang', the fourth tone)
Although Hangzhou doesnt have so many alleys as Shanghai does, take a look at this, it does have some typical households alleys.
It's a great fun to live in an alley like this, households here have a much closer relationship with their neighbors than those who 'lock' themselves in apartments.
This must be a new alley, I know some Xiangs in Hangzhou that can be traced back to Ming and Qing dynasties, and they look just fantastic, hmmm, Monday and Tuesday are pretty boring, right? You just need to pull yourself together...
I have some really good shots tomorrow, don't worry, I'm sure you'll like it.