I've been learning playing guitar (classical nylon-string) for 4 months and I practice in my dormitory room. As it has nylon strings and I don't play too much rhythm guitar, I don't think I've disturbed the other residents. I'm playing it in a small separate room with thin walls.
But I'm planning to buy a steel-string acoustic guitar. I'm not sure if I can play it without disturbing others, especially with a pick.
What is your opinion about that situation? Do you think it will make much more noise than nylon-string one? What if I use a soundhole cover?
Edit: I have tried a compact acoustic guitar, similar to a classical guitar body. There is a significant difference between dreadnought body and that in volume. I guess I'll go for a standard acoustic one, but just an update for other readers.
Update: I have found some solutions after buying a standard acoustic guitar. As usual, others have already come across this problem before me. Stuffing a sponge/sock between bridge and strings or putting some clothes inside the guitar seem like simple solutions. I have also seen something called a "guitar mute", but I didn't buy it. You can find other ideas by searching for "playing guitar quietly" on the Internet.
Update2: Because the question took interest again, it needs an update. It's been a year, if I play in the evening, I play "softly". Nobody has asked me to stop playing it until now.