The hotel is 5 minutes walking from Wanfujing subway station and 15 minutes from Beijing railway station. Usually, the airport bus lines will stop running at 11pm or until the last fights arrival. So you can take Beijing Airport Shuttle Bus(https://www.travelchinaguide.com/cityguides/beijing/transportation/airport-shuttle.htm) ,Line 3 runs to the railway station and then change to a taxi to the hotel. Or you may take airport express train then change to subway to Wangfujing, then walk to the hotel.