Keep loud arguments to a minimum. Your neighbors likely don’t want to know your business. No loud media between 9PM-7AM. Your neighbors may not like your choice of music. No regular jumping or loud running throughout the apartment. I am sure your neighbor can be more considerate if you have 4-6 year olds, but there should be a limit.
While not required, holding the elevator door open when you notice someone trying to catch the elevator. Going in and out, those exiting the building has the right away. This is the same policy as PRT? with their bus system.
Keep in mind, that there is closed cell spray foam insuralation for sound barrier. This means you have to really loud for your neighbors to notice. If this is a regular occurrence, then you might get reported, and being too loud is a violation of the lease – hence this page.