I think in the beginning it is often about physical attractiveness. Especially when you go clubbing or so, you are blanking out intelligence and lovingness mostly. But I agree that when you know someone better, there are different things that makes you feel attracted. However I am honest enough to say that I will never date someone I find ugly, even if she is really nice. But the attraction has to be there, and if i feel not only a little bit physically attracted, there is no chance.
Lets assume you are in a group with several friends/girls, all relatively ok-good looking.
What is most important to me here is:
-humour - once some physical attractiveness is there, this plays a huge role, if i want to further meet her
-intelligence - kind of goes with humour often, intelligent girls can have great humour because they make intelligent jokes
-the non agreeing ( this is very vital and may not often be said: I just feel very attracted to someone, who is not agreeing to everything I say, who is challenging what I say, who makes fun a little bit about some things I say) -> There has to be a balance though, if someone constantly disagrees, that wouldn't make things work. I think this thing happens for both genders. Its like flirting, you are kind of making yourself interested.
For example I know someone, who has/had a crush on me, and she is really nice, not bad looking, but whatever I say, she just always says yes and is so lovely and agrees to everything I say. Even though she is super nice, there is no real attractiveness there.
-physical appearance(has to kind of fit into my type - not too fat, not too small)
-smile - very important, a cute smile is sooo much - makes me wanna kiss them directly