My flight arrives in Beijing around 10:30 pm..what is the best way to get to hotel (Redwall) from airport?

Counting in the time of clearing the custom and claiming luggage, I'm afraid only airport shuttle bus is available at the time. Take airport shuttle bus line 2 to Xidan, and then take bus no. 109 to your hotel, if there is one. Or take a taxi from Xidan to the hotel directly, about rmb 20 and 12 minutes.