I don't think they took in serbs (maybe a few, but definitely no number that is comparable to the kosovo albanians). I don't even know if any serb would seek shelter in Albania. I agree, the noble thing to do would have been for people from both countries to try and feel some empathy for each-other. But I think a better question to ask would be whether albanians from northern Kosovo protected serbs who lived there from ethnic albanian nationalists (which I do not know). Albania doesn't share a border with Serbia.
Regarding jewish immingrants in WW2, I don't think there are reports of any attrocities in Albania. The number of Jews before the war was 200. After the war it was 2000. https://en.m.wikipedia.org/wiki/History_of_the_Jews_in_Alban...
https://en.m.wikipedia.org/wiki/The_Holocaust_in_Albania
Anyways, the article probably does make it sound a bit bigger than it is, and even somewhat emotional. I just think that it must speak at least some truth regarding hospitality as a value among the population.