I was in the houding in the complex closest to the school. These apartments are run-down and what I've heard and seen, the apartments other side of the main road are better. But they're about 10-15 additional minutes walking. The Best Western is, well, a hotel. Expect much better quality and a much higher price. And you'll be all alone each evening. You've got to share the apartment (including the bathroom) with 2 or 3 other guys (girls) although each will have a separate bedroom. But it does give you somebody to talk to during the evenings, to go out to dinner with and so forth.
When I was there there was a guy on the two-weeks VIP course (which is a ridiculous schedule and nowhere near possible unless everything comes together flawlessly). Being on the VIP program he got a car (very handy) and a room at the Best Western. He kept the car but quickly changed to one of the apartments, basically because of the company he would have in the evenings.