where is the start station for the Shanghai Sightseeing Bus?

The starting station is the SH Urban Planning Exhibition Center at No. 100, People's Avenue, Xizang Middle Road. But I think the closest station to your hotel is the Site of the First National Congress of the Communist Party of China, Xin Tian Di Station. It is around 3 to 3.5km from your hotel and you are suggested to take a taxi to reach that place.