Physical: I'd like someone reasonably healthy or better. I cannot fault a person for being overweight (I am) or bad at regular exercise (my inspiration comes in spurts). But excessive drinking, being a smoker, or routine recreational drug use definitely puts me off, as well as being so morbidly obese that you need a forklift to remove you from your home.
Emotional: I'd like someone capable of true affection, but respectful of my space when I need it. I will do my very best to return the favor without complaint. Oh, and fidelity, fidelity, FIDELITY. If you can't be true? --then so long to you.
Mental: I'd like someone reasonably intelligent. I'm not going to demand IQ testing, but we need to hold a conversation at least mildly well on current events. Tolerance is another biggie; if you can't disagree without being disagreeable das boot mein friend.