How much from PEK International airport to Guanganmen Grand Metropark Hotel at Xicheng District?

Hi,
My Air China flight is landing at 6:10 PM on third week of October 2019. I have to take West Train early next morning, so I booked Guanganmen Grand Metropark Hotel. I tried to confirm airport shuttle but Hotel is not responding even after I wrote them several emails (I know I will not stay there in the future) but how much do I have to pay for Taxi if I should take it? Thanks!