I am saying this as a straight male
Hidan is handsome. He has really nice purple eyes (same as my Guild Wars 2 character) and has just the right muscle tone. He has the kind of hair style that rich, classy people would wear. Hidan also has nearly 100% perfect symmetry in his face (everything is parallel and he has an angular jawline)
The only thing I dislike about him in aesthetics is his personality. It doesn't match his appearance at all. When you see him you see a handsome rich guy that would be respectful and classy, yet knows he is better than you. A smart person that believes in his religion. But instead he's a hilarious silly goose, which is fine...just doesn't match his looks.
Hidan's appearance with his personality is one of the many problems in Naruto...but nothing this big isn't going to have a few errors. I just believe that this one could have been easily avoided if Kishi had better quality analysts (does he even have any?)