shanghai city central international hostel in Putuo district from pudong int'l airport?

Hi, here is my suggestion about your route:
You can take the subway line 2 at Pudong Airpoort to Century Avenue MTR Station. Then you need transfer to subway line 4 to Caoyang Rd. After that, you can walk to your hotel in 3-5 min.
The whole journey costs less than 10 RMB.