Hi I'll be reaching Tianjin on 22 Sept morning with my daughter. Going onwards to Beijing the same day by bullet train. Back to Tianjin again for a day before departing. Like to know

1. Easiest and alternative ways to Tianjin Main Station fm the airport
2. Bullet train dep time in the morning after 7am
3. Does bullet train only stop in Beijing South Station
4. If so, how far is the jouney and the cost from the station to the city centre, Xidan
6. Is Grand Mercure Mercure Hotel, Xidan a good choice or any recommendation
7. In Tianjin, can u recommend any clean hotel that is near the Tianjin Main Station that does shuttle to the airport.

Much thanks
Monica