How to travel from Xi'an Airport to Bell Tower Youth Hostel

I will fly to the city from Jiuzhaigou on Nov 13, 2014 via MU2248 and landed at 22:30 hr. which is quite late for the shuttle bus to the city center.

How can I go to the hotel? Our hotel is Bell Tower Youth Hostel located on No. 1 North Main Street. Can we take the Airport Shuttle Bus Line 1 or Line 3 to the city center and take the subway?

What time is the operation hour of the subway, our hotel is located near the Bell Tower (North Street) Station.

Please advise.