I traveled quite extensively through Germany several times. (Air Berlin managed to lose my bags 100% of the trips I took with them.) I really enjoyed the Munich area and found people very friendly but despised Frankfurt and found it very “sterile”. Austria is a different place but I also found I didn’t like Vienna very much. The impression I had of Austrian’s was they still wanted their empire back.
I also like Helsinki, Warsaw, Prague and Zurich a lot. I was fortunate to do a month of training an FAT acceptance tests in Paris but I am not a fan of that city either. But it was nice to be paid to stay there and see the place.