Mit dem Zug dauert die Fahrt ca 20 Minuten

Hauptbahnhof hotels near this train station that offer free airport transfers

I would personally stay a mile or less from the train station if you would prefer to walk and ride. That being said if you have an average budget I would choose a place that offers complimentary breakfast. You will thank me later. I have travelled all over the world and Zurich is absurdly expensive. I am talking $16 for a value meal at Mcdonald's expensive. $5 for a cup of coffee expensive. For a point of reference, I did not find Paris expensive at all. Also, 3 days would be the absolute most time I would ever spend in Zurich. It is incredibly dry and non eventful. It has some high points...But very few.

Sí. Pregunta ein la informacíon de la SBB.

I don't know

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You may try Arlette Beim HB, Leoneck Swiss Hotel, Royal Hotel Zurich. They all have AC facility in rooms and will fit in $200 budget.

Just walk in!