Originally Posted by
fransknorge
Things have changed a bit now. There is a S-Bahn station at Gateway Gardens that connect to the train station, thus avoiding the overcrowded/overpriced/unreliable shuttles.
The OP will fly from T2. Between the Hyatt Place and T2, the S-Bahn is of little use. Between the long-distance train station and the Hyatt Place, the S-Bahn is of little use, either, if you ask me.
I agree with you on your other point on the walkability between T2 and the Gateway Gardens hotels.