From Beijing Capital International Airport (Terminal 1~3) to Grand Skylight Catic Hotel:
1. Taxi: the cost is around 70 - 90 CNY. If you arrive after 11:00 p.m., taxi is the only choice.
2. Subway (06:20 a.m. - 10:50 p.m., 29 CNY): Take Airport Express Line (Subway), transfer at Sanyuanqiao Statio to Line 10. Then transfer at Beitucheng Station to Line 8. The destination is Olympic Sports Center Station, which is a 20-minute walk to the hotel.
3. Airport Shuttle Bus (06:00 a.m. - 10:30 p.m., 22 CNY): Shuttle Gongzhufen Line, transfer at Xibahe Station (i.e. Xi Ba He Station) to Bus No. 419. The destination is Guo Jia Ti Yu Chang Dong (Niao Chao), which is a 1-minute walk to the hotel.
More information and walking directions are provided here (pdf file).