This hotel is close to the Dengshikou Station of Beijing subway Line 5. So, you could take Line 5 to Yonghegong (Yonghe Lamasery) and then transfer to Line 2 to reach Dongzhimen. The fare is CNY2 per person. Then, you could take the airport express in the station to Capital Airport (CNY25)or go out of the subway station to take the shuttle bus (CNY16). Highly recommend you to take the airport express, easy and fast.