I'm 5'4''. Am I too short to be physically attractive to girls? If a guy has an OK face at the very least but does not have the height could girls still find him physically attractive? Or is it a big no-no?
A lot of girls are 5"3 so I don't think it's a big deal... short guys can date short girls and then their height doesn't matter and there are plenty of woman who care more about personality than they do about looks.
I used to have a crush on a guy who was like an inch shorter than me. Didn't detract from his attractiveness.
No, you're not too short. I'm 5'4" and I have no problem finding girls that like me. A taller guy will always have an advantage, just the same as a guy with model looks or a lot of money. But don't worry about it. Just make an effort to make yourself as attractive as possible (join a gym, play sports, wear nice clothes, take up hobbies, do interesting things, get a good job etc.) and change the things that you can change rather than worry about your height which you can't.
Most girls prefer a taller guy (than them) or at least the same height, but 5'4" is the average height for a girl in the UK so that means half the girls here would be OK with me (I don't know where you're from, might be the same). And in fact I've had quite a few who were taller than me. If you have other attractive qualities they will overlook your lack of height.