I would try to do it when they’re not home, or to be fairly quiet if they are. If you share an actual room, as opposed to two rooms in the same apartment, it’s usually the best idea to clear it with them. This means, “Hey, I’m having (partner) over later, do you think you could go see a movie or something?” Or just plan the date for when they’re at work or class, if you want to be really nice.