I will be staying at Beijing Wangfujing Dawan Hotel. can I take the airport express to the hotel?

The airport express cannot lead to the hotel directly, you need to transfer to subway. You can take the airport express train to Dongzhimen Station, then transfer subway line 2 to Lama Temple. Then transfer to line 5 to Dengshikou Station, Take the Exit A and walk about 160 yards, you will reach the hotel.