Have you ever gone backpacking around eastern europe?

Can you tell me how it went and what you think are the best places to see, and anything else that might be interesting?
and how much you think 3 weeks would cost if we stayed in hostels?

I am there right now, and this is my fourth time. Go to Prague and Ceske Krumlov in Czech Republic, Mostar in Bosnia, Krakow, Warsaw, and Weilicka in Poland, Dubrovnik in Croatia, Budapest in Hungary, and Ljubljana in Slovenia. Budget for 50 Euros per day plus transportation, which is relatively cheap in the East, it will depend on how much you move. You can take a fairly long trip, like 9 hours on the train, say Budapest/ Ljubljana, for 40- 75 Euros. depending where you are and the specials you find. Email me if you want any really specific advice. And if this is your first backpacking trip, read Rick Steves- Europe through the Back Door. Great travel skills and advice. His guidebooks are also excellent.