I recently spent a few weeks in a small German city.
My grandparents had escaped so they didn't spend as much time at their hands.
I've read and heard plenty of firsthand accounts.
Ultimately, when your grandparents have went through it all, and you have heard about it dorectly, and it developed your feelings strongly, it can hit home much stronger.
Personally, there was always the knowledge of what went on here not too long ago in the back of my head.
I wasn't looking for it, and I didn't find antisemitism. The shliach there said he never experienced blatant antisemitism from the locals. Keep in mind that this is one of the only countries where denying the Holocaust is a crime.
People there are generally colder and more uptight, nothing to do with who they are talking to.
That's my .2, feel free to ask me to explain