Hyde and DeValera were totally wrong to send condolences on Hitlers death. DeValera's personality was definitely his undoing here and his unwillingness to see the bigger picture here and his desire to make a point to the American ambassador were definitely a factor. He wouldn't be a popular figure around where I live!
Although neutral Ireland was at times struck, I only learned recently the Synagogue in Dublin was the only one the Germans paid reperations for (and I can only imagine how many they destroyed).
While there was undoubtedly anti semitism in Ireland at this time there were some figures who helped Jewish people such as Hubert Butler and Mary Elmes (Cork woman)who was arrested by the Gestapo for saving at least 200 Jewish children bound for Auschwitz.
Clonyn Castle in Westmeath hosted 100 Jewish children for rehabilitation just after the war. Initially the Dept said no but the Chief Rabbi appealed to his friend DeValera (the irony) who approved the request.