Physically, I like a man with long hair, body tending towards the thin side, with high cheekbones. I like nice hands and wrists. Not much body hair. Style wise, looking a bit metal or 1970s rock star, tight jeans and so on, or hippy/goth look. Non-physically, I like an aura of competence, someone who can cope calmly with whatever life brings and, of course, a compatible life outlook and a good degree of overlap in our tastes and interests.
In real life, I think I have only once been involved with a man on the basis or main basis of his appearance, and it didn't go well. In reality I choose on the basis of character and find what I can to like about looks.
Really hard to say what men like in women. I'm attracted to women and I tend to go for women who are what I'd say is an idealised version of myself, or the face and body I would choose if I'd had a choice in the matter; and personality-wise, exactly the same criteria as for a man.
Men in my experience tend either to be very conventional in what they like - slim, pretty, nice boobs and legs etc. or they have a very particular, niche aesthetic such as men who are attracted to very overweight women. While some men will confidently expect super-attractive women to fall at their feet (much more so than women expect super-attractive men to notice them) others will learn to love less conventionally attractive women and focus on their best features.