Capital airport Beijing to Xiyuan Hotel?

Here are two ways for you to choose;
1. take shuttle bus line 2 to get off at Xizhimen Qiaonan stop and then take a taxi to your hotel in 8-10min. Shuttle bus costs CNY 24 per person and the taxi fare is around CNY15.
2. take airport express train to Dongzhimen and then transfer to local subway line 2 to Xizhimen. After that, transfer to line 4 to get off at BJ Zoo. Get out from exit D to walk to your hotel in 750 meters. The express train costs CNY25 per person and the total subway fee is CNY2.