How to be discreet about sex at parents' home

My boyfriend and I are staying the week of Spring break at my parents' house and we're both kind of nervous about this as our rooms are right next door to each other so the walls touch/are connected. There will be some time that we will have alone when they are gone at work but not much so I'm wondering if there's other ways we can be discreet about it or does anyone have any advice about this?