We watched quite a few YouTube videos from our favorite channels. This link is really useful for getting some ideas.
I used the following filters to get our neighborhood of Arroios. Technically our side of the street is in Penha de Franca.
Central Location, Metro or Train, and Neighborhood for Foodies. Our area was 1 of 3 that came up.
This link is a little more graphical but has some insights.
This link will give you a decent overview of the noise in most major cities throughout the world.