Yes I understand that most people can hear their neighbors in an apartment setting, however it is not only that I can hear them sometimes, it is constant with the loud music and screaming. I politely asked the man upstairs to turn down his music when he then cursed at me and slammed the door in my face. I then notified my landlord who said "he would talk to him." The noise subsided for about a week and then it went right back to where it was.
The space heaters really arent an issue to me, like I said I like it to be cool in my house, I'm thinking more along the lines of leverage with bringing this up.

So, again, my question remains, how do I legally get out of this lease?