It depends on your preferences.Each of those hotels is designed to appeal to a slightly different type of customer. As a general guideline, the Baur au Lac is generally considered the most luxurious on your list, and the Ambassador à l’Opéra is not really a luxury hotel, though very nice - reflected in the comparative prices.
I'd also take a look at Hotel Storchen and Hotel Widder. I love the location and atmosphere of the Storchen, and it's a reknowned meeting point.
It is really difficult. I have stayed at the Storchen, Dolder and Park Hyatt, and visited the Baur au Lac and Widder. They are all so different - the point about appealing to different situations and clientele is absolutely right.
I think the Dolder combines luxury, modernity and location very well - as long as you don’t mind being away from the City.
Thank you everyone
Hi is the Park Hyatt good also?
ok thank you
Park Hyatt is very good. But it could be anywhere. Feels a bit like an office building.