i shall stay at best western green richfull hotel in Hangzhou. is there any nearby halal food resturant?

Within the walking distance, there is no halal food restaurant.

It is suggested to go to the Xianglin Halal Food Restaurant at No. 527-2, Qingtai Street, Shangcheng District. This restaurant is around 1.2km from your hotel, so you may need to take a taxi to reach that place directly.