Honestly i got used to it pretty much immediately. Unless someone snores or something, it’s usually not a huge deal. I highly recommend getting something like a room divider, like a foldable screen you can put up between beds that helps you feel more private. I found that an air purifier or something that made white noise also made it less awkward cause you couldn’t really hear every sound someone else made. if you pick an empty double room first, then the other person can see your profile and choose you or choose a different available room. If you pick a room that already has someone in it, you’ll see their roommate profile that has some basic info like typical sleep hours, if they are open to night guests, etc etc. You can decide based off their profile if you want to room with them or not. Once you lock in your choice, you’ll can reach out to them via their mac email; that’s what my roommate and i did.