Preparing my own move to Hangzhou I have been gathering some websites and material regarding flat hunting that I thought some others might find useful as well.
If you got a good site that I missed, do speak up and I'll add it into the post.
http://www.hangzhoulease.com/index.php?pg=immo&id_immo=17&nm=XF000049 - Xihu - EAC&order_num=3
English website, you can search by district and all in all, I quite like that site.
Similar to the one above, but the price bracket is less flexible (1k-2.5k, 2.5k-5k instead of just clicking 3-7k as the one above).
This one is only in Chinese, so either you have a good friend, speak the language, or are a very patient Google Translate user
These guys are apparently really good at customer service
For those with a higher budget
Hope it helped!