which bus should I take from Hangzhou Starlight International Hotel to expo center? Is Taxi possible

Do you mean the Starlight International Residence Hotel located No.228 Jiangnan Avenue. If yes, you can first walk about 440 meters to Qin’an Road Danfenglukou bus stop to take the bus 402. Then get off at Xixing Daqiao where to take the bus No.419b and get off at Bo’ao road Lifenglukou. Then walk about 320 meters to the expo center.