1. How do I get fr Xian Airport (which airport shuttle bus) to IBIS Hotel at Heping Road ?

You can take the airport railway station line to Longhai Hotel, which is about 1.4 miles from your hotel. Then you can take a taxi to the destination. The bus fare is CNY 26 and the taxi fare is about CNY15.

If you want to meet someone and go back to the airport, you can meet them in the Longhai Hotel, for the bus stops there.
In the airport, there are taxi station in T3 and T2.

Terminal 2: After leaving the baggage claim area, please proceed to Exit 2 and make your way across to the taxi station.

Terminal 3: After leaving the baggage claim area,please proceed to Exit 314 and make your way to the Ground Transportation Center (GTC). Then cut across the hall and leave the building through Exits G08 or G09 to arrive at the taxi stands.