Hi, how do I get from Maglev station to 100 hongqiao Road, courtyard by Marriott hotel? Thank you.

I think you may mean the Longyang Road Station?
If so, it is suggested to take the subway line 2 from Longyang Road Station to People Square Station and then change to line 1 to reach Xujiahui Station. Get out of the station from Exit 20 and then you can walk to your hotel easily.