My friend has frum cousins in Denmark.
The first time I went to Poland, one of our group members who speaks and understands Polish noticed some graffiti on the streets which she told us contained anti-Semitic language. Other than that, I have not (yet) experienced anti-Semitism in Europe. My husband and I have a stopover in Zurich on our way to E”Y; I’ll let you know how it is there.
In general, Chabad is probably your best resource.