Hi there!! We were also at CBR the same time as OP (March 14-21). We absolutely loved it!! We were in Trinidad South, in a Pirate Room, building 34. There were only families in our block (no teen groups), and the beach and the quiet pool were very quiet the times we went. My teenager actually left with his friend to go to the Jamaica Beach, where there were teenagers hanging out. I guess we got lucky. A few afternoons we went to the big pool with our younger children. It was crowded, but not rowdy. The teeangers and college spring-breakers seemed to be in control.
Also, our room was completely dark at night, once you pulled the black out curtains. Our air conditioner did not make any noise either. We found it to be an awesome location, and not too far a walk to the food court/main pool. If you don't want to walk, the Internal Resort Shuttle came to the bus stop often (my daughter called it the International Space Shuttle

)
The beaches and grounds were so beautiful, and we took a pizza over to Caribbean Cay one afternoon to eat on the picnic tables ($16 for a large -- great bargain!). Love that atmosphere with the reggae music piped in!!
Wish I were still there!!!!