Well, as a woman I would answer the same as I would look for in a man. That's the face. Actually, the smile and eyes. There kind of has to be an attraction to begin with before you find out more about the person. Although, you could just meet someone and not be too attracted to them and find out you really like them later. Then you sort of find things to be attracted to.
At least, that's how it worked with my husband. We were friends before I found myself attracted to him physically. Then it was actually the belly that got me now that I think about it. He raised his arm and his shirt rode up. He had a really nice stomach. And that little line of hair that runs down from his belly button into his pants! Grrrr!
Okay, that was a damn near PK rant. Sorry. I'll stop now.