The first time we went to CBR we were in building 33 which is in Trinidad North. Our room was just at the top of the stairs that lead out to the bus stop. It was such a good location since it was close to the main building and the bus stop.
Our second visit we were in building 23. We were close to a bus stop, but it felt like we were so much further from the main building and pool. Having said that, we were still close.
Personally, I liked Trinidad North better for location. Both of them are normally the first and second bus stops when coming and going to parks, so you can't beat that.