I stayed at Kim's place when I drove down the first time, and IB when I flew down my second time out.
In my opinion, Kim's actual living space is definitely nicer. I'm also glad I stayed there when I first got hired as the roommates I was matched up with were in my class and are still very good friends of mine years later. Like someone said above, the rooms at IB are hit or miss. Mine was not great, and when I went over to a classmates I couldn't believe how much nicer hers was; it felt like a completely different complex. That being said, I loved having the bar and gym there. When I was at Kim's it was really hard to motivate myself to put down the books and drive to the gym. The courtesy cars at IB were also super convenient, I never really had a problem with not being able to get one. Kim's does have pretty good weekend rates with Enterprise though.
A lot of people talk about the community aspect of Kim's, but honestly that's at both. If your class is cool, and it only takes one person to get the class to hangout, you'll end up having a few big parties at Kim's no matter where you stay. Uber is cheap.
Anatole wasn't really popular either time I was down there, but all in all I was happy with my choice both times I went down.