I literally know exactly what you're talking about! Currently, I'm living in a suite with three other girls with a similar arrangement. Last year, I lived in a single room just in the hallway, but everyone else on my floor seemed as though they were really close. They would party all the time and get drunk practically every night. That just wasn't what I was in to, so naturally, I stayed in my room. One night, a drunk girl and semi-drunk guy were standing outside my doorway (his room was across the hall from me) and were being kind of loud. The girl was like "Shh, she's in her room! She doesn't like us!" or something of the sort, which made me kind of upset that my introversion and complete shyness was coming off as me not liking anyone. Unfortunately for me, I was in the middle of a feeling of anger at the time, so I actually whipped my door open and was like, "you know, I can hear you!" What happened afterwards is a long story, but basically involved them wandering into my room and talking to me in a drunken state for like, an hour at 2AM. Eventually they both went back into his room. I'm totally familiar with the walls being paper thin in these sorts of apartment-style living arrangements. I literally heard her say something like "She's really nice, we should talk to her more" to which he responded with "Yeah, but she's soo socially awkward!" So I know your pain in that regard.

Honestly, I don't really know how to solve the situation because if I did, I wouldn't be dealing with that same problem year after year. For me, it's almost ok and you almost get used to it. I just always kind of think that I don't really want to be too close with my roommates because otherwise they might intrude on my alone time, which is sacred to me. For dealing with loneliness, I just put on a radio or a TV in the background or phone my mom.

Just do whatever you're comfortable with at the time. If you can't keep your door open, try not to stress too much about it. You'll be happiest when you're comfortable!