Hi Mr.Yudhi,
The taxi fare is about RMB 150 from the Beijing Capital Airport to the hotel, but you can take the subway instead. Take the Beijing Airport Express Train(https://www.travelchinaguide.com/cityguides/beijing/transportation/airport-express-train.htm) to Dongzhimen. Transfer to Beijng subway(https://www.travelchinaguide.com/cityguides/beijing/transportation/subway.htm) line 2, and then change to line 1 at the Jianguomen junction. Stop at Tiananmen East Station and walk east to Nanheyan Street. The hotel can be easily found.