Novotel Xinqiao going to Badaling Great Wall

You hotel is very close to Chongwenmen Station of subway line 2, so you can take the subway to reach Gulongdajie Station and then take a taxi to reach Dongshenmen Bus Station where you can take bus 919 to reach Badaling directly.
The subway journey will take you about 2 RMB and the journey for the wall is about 12 RMB.
From Deshengmen to the wall, it will take you about an hour and the subway jouney is about twenty minutes.