Centro Bars

I have no problem with the bars being open 24 hours a day, but the noise factor is totally unacceptable. The bars in central are tolerable till about 11 PM when they turn up their noise and around 1 AM they turn it up even more, some till 7 AM. The noise should be in a structure that confines the noise inside the premise but not keeping the whole neighborhood awake. Some hotels like the Celeste and Adriana and others have many guests that may stay 1 or 2 nites and then find a quieter place to stay because of the insane noise issue. Complaining to the local authorities doesn't seem to do anything.