Which stop of the airport shuttle bus should I get off from the airport to Beijing Forbidden Hotel?

I plan to take an airport shuttle bus (RMB 16 ), then change to a taxi (? RMB) to go to the BJ Forbidden Hotel along the Nan He Yan Street.
Which is the nearest shuttle bus stop to take, (how easy ) the taxi to the hotel ?
or should I take the airport taxi ?
thnx