First of all, I'm extremely glad that my sister forced me to watch Itazura na Kiss.
The drawings were... Eh. But don't let that "minor" thing stop your from watching this anime.
It was really enjoyable to watch because of the comedy (for me). It had me laughing and I wanted to watch more. All the twists like (MAJOR SPOILER) how Kotoko became a nurse, made me shocked and amused.
So if you're hesitating to watch Itazura na Kiss, just try it out! It's an awesome anime and I'm looking forward to be reading the manga!