How comfortably could I live on 70000 Czech crowns?

Just been offered a job for 70000 Czech crowns (before tax) in Prague. How comfortably could I be living? Would like a nice modern one bedroom in the city and obviously go explore the city and save for the future. Could someone outline the general expenses for things like a one bedroom in the city, food, transport, etc? How much could I save? And how much exactly is it after tax?

Thanks :)

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