Remember that one of the advantages of going in fall/winter/spring is that there are drastically less tourists. Much better than when then simply see you as a tourist if you arrive in July or August, when half the people are away on vacation.
I've only been to EE during the fall/winter. Poland/Czech/hungary, etc isn't that bad. But the baltics are pretty chilly and Moscow was downright very cold. I was there the first week of November (around this time of year) and it was -10C, about 14F. When it got the 32F, it felt like a heat wave. Today in DC it was 77F!!! However, winter in Eastern Europe is quite beautiful and peaceful.
I've only been to EE during the fall/winter. Poland/Czech/hungary, etc isn't that bad. But the baltics are pretty chilly and Moscow was downright very cold. I was there the first week of November (around this time of year) and it was -10C, about 14F. When it got the 32F, it felt like a heat wave. Today in DC it was 77F!!! However, winter in Eastern Europe is quite beautiful and peaceful.