When it comes to Jews in general, although bigotry certainly exists, Ireland should be way down the list of European countries those concerned about anti-semitism should be worried about. When it comes to hating, we have other more relevant and ready targets at hand - Jews just aren't that important to our nutjobs.
When it comes to Israel specifically, I would say that in Ireland we have a tiny fringe of active defenders of Israel, a slightly less tiny fringe of ‘pro-Palestinian’ activists who appear to be more concerned with vilifying Israel than with the welfare of Palestinian Arabs, and a vast, mostly uninformed centre ground with no particular animus against Israel but a vague sympathy for Palestinians as the perceived underdog in the conflict. Of these three groups, the 'pro-Palestinian' is easily the most active and loudest, and hence receives a level of attention out of proportion with its actual numbers.
When it comes to Israeli perceptions of the Irish, all I can say is that in two years in Israel I heard so much ignorance - some Israelis seem to believe that the question of Jews and Israel is a major issue in Irish society and politics, that we previously had a Nazi-allied government, that Ireland is the most anti-semitic country in Europe, etc. On the other hand, most seem to harbour the same kind of stereotypes the rest of the world does (i.e. the happy foolish drunken charmers):