A movie I saw convinced me beyond a doubt he was in Argentina. I think it was gray wolf. They had witnesses and the house and admiral donitz his favorite submarine commanders sub in the water near the beach.
And Argentina looks just like the Bavarian Alps there and had been developed by the nazis for a decade before the end of the war. It really was southern Nazi Germany. It even had regular flights of zeppelins from Germany to Argentina.
Here is the movie on YouTube apparently
(post is archived)