I'd like to go to Europe in late August/early September. But I don't want to go to Italy (been there), Spain, or France, and my partner doesn't want to go to Germany. We're both kind of meh about the UK/Ireland.

We'll only be able to take off about 5-6 days from work, although the days are flexible (we could go Tuesday-Tuesday, for instance.)

I was thinking a location in Central or Eastern Europe - particularly if the flights are expensive, it would be better if cost of living is cheap. But I don't know where to start!

I speak some German (enough to get around) and Armenian. He speaks a tiny amount of Spanish. Neither of us has any Russian. Will my German be enough to get us around in Eastern Europe?

Additional Details

Ignore the language question! I'll be getting a guidebook to help anyway. I'm more interested in where are interesting (and safe) places to go if I'll only have a week!