How to say 热闹 in English
Vibrant, as in:


  adj. Pulsing or throbbing with energy or activity: the vibrant streets of a big city.


https://www.wordnik.com/words/vibrant

In urban planning, the idea of having vibrant streets, neighborhoods, communities can often be seen as a goal to work towards:


  Vibrant Markets &amp; Streets


http://www.inclusivecities.org/policy-planning/vibrant-markets-streets/

If you are in the market for associative housing such as Condo developments, look at the area amenities section in the sales brochure. You may notice the use of vibrant to describe the street, neighborhood or the community development in order to make you feel attracted to buy there.