Travel by Maglev to Somerset Xu Hui @ Xintiandi & Huaihai Rd

From the airport, you can take Maglev to Longyang Road first. Then transfer to subway line 7 to Zhaojiabin Road Station, from where you can walk to your apartment within about 550m. As for the exact direction from Zhaojiabin Road to your apartment, you can ask the local people.
Or you can take magle to reach Longyang Road Station where you can change to local subway line 2 to reach Century Avenue Station. At this station, you can find line 9 to reach Jiashan Road Station. Get out of the station, you can see your hotel easily.