What is the translation of 熱鬧?
According to 21 Century renao is an English word borrowed from the Chinese 熱鬧:


  n. “热闹”；(文娱、体育、业余爱好等)热闹有趣的活动 [借用汉语拼音 rènào(热闹)] 


so that should fit exactly what you're looking for but....

If that's not satisfactory enough consider:


lively
bustling
busy
thrilling
exciting (excitement)
noisy