Yes but the exchange rate is very bad. Better to change just a small amount there and change the rest somewhere in town.
All airports world wide that I have dealt with will clip you.
Especially when you are leaving a country because they know you don't want to take money that is worthless at home with you.
You are desperate to unload it and they know it.
Like 357 suggested, cash in a 100 Euro at the airport which will give you enough for some chow, a cab or bus and enough for
a nights stay. Then hit a bank where they should give you about four to one for your Euro's.
(100 Euro = 420 PLN or zloty the last time I checked)
You have yourself an enjoyable time.