sorry, no personal info. It is a lot easier to find a good beer in Prague.
However, three sources claim Ebel Coffee House is good. Judging from the adress(es), it is obviously smack in the middle. You don´t want to miss Old Town anyway (or the castle, or the old city walls with that magnificent church, or...) Have fun in Prague!
I found this info mostly on
TimeOut and
In your pocket.
Edit: It seems they are rather big... website
here, click on the "locations" link at the left to find addresses for their coffee bars.
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" The Ebel touches the heights of the art of coffee brewing. Journalist and designer Malgorzata Ebel serves Prague’s finest bean blends any way you like them, whether in the form of macchiato or mélange, espresso or cappuccino. More than 30 prime arabica coffees from her neighbouring shop, VzpomÃnky na Afriku, are available to go into your cup. Passable quiches, bagels and brownies are served as well, on tables in Prague’s most fashionable Old Town courtyard."