Kaffeehauser in Wien

It is completely normal for a customer to linger alone for hours and study the omnipresent newspaper. Along with coffee, the waiter will serve an obligatory glass of cold tap water and during a long stay will often bring additional water unrequested, with the idea being that you are a guest who should feel welcomed and not pressured to leave for another patron.

I received this postcard from Marcie.
What's the great moment in coffee house is sipping the coffee while writing on the postcards.

Some well known coffee house shown in the postcard
(i) Cafe Konditorei Demel
(ii) Cafe Hawelka
(iii) Cafe Eiles
(iv) Cafe Central
(v) Cafe Landtmann