The apartment is totally central. One walks right into the busy shopping / restaurant / ... streets of Lisboa. At night this means that you sometimes have some noise from people walking by. Also some trash collection might happen in the early morning. But there is no noise from cars or traffic since these are pedestrian streets. Also some bedrooms go to the back which is quieter than the front ones. The place is very good located and properly equipped with showers that work and beds that are comfortable. Windows close well and keep noise or heat out. Also the a/c works quietly if one really needs it.