If the Hangzhou Library you are referring to is the one opposite to a listed hospital on Huansha Road.
1. The canteen of Hangzhou Library itself is open to the public
2. Walking 1 meters across Pinghai Road, there is a pot for two meals
3. Walking towards Yan 'an Road, there is a lot of food at the bus terminal, such as Yonghe Soymilk ... and KFC at the intersection of Pinghai Road on Yan 'an Road.