is it a good idea to watch Hetaoni at 1:00 in the morning?

I have not watched it myself... I hear it's rather very good but, sad... I do not dare to since I do not think I could stand to see any Hetalia character "die" in some way...

I don't think it would be bad to watch it. There are to many scare moments. It's more based for plot not so much with scares.

I've watched it that late before and was fine...in my opinion its all about your maturity, can you tolerate slightly scary things, as well as deaths

That is the summit of all bad ideas.