You're right, the Park Hyatt is an fantastic hotel, though I've never stayed there. I have recommended it to friends who loved it. The few times I tried to stay there, they either only had rooms that didn't face the Opera House (no point in staying there without that, IMHO) or the price was waaay more than we wanted to pay......over $AUD700. a night, which translated to about $400.+ US dollars. The Regent is pricey and 5 star, but not quite that high. If anyone goes to the Regent, then a view of the Opera House is also must. Since it's a taller hotel than the Park Hyatt, they have some spectacular views. From my window, I felt like I could reach out and touch the Opera House!

Good suggestion for the train ride!

Candice NYC