I've heard of this "floating studio" concept which as far as I understand a method of sound insulation by building a room inside a room with specially insulated walls. I also understand that it's very expensive and I don't think it's even quite possible for me since I only live there for rent and I'm probably not able to much of permanent/radical changes.
So I wonder if there is any chances to build (semi-)sufficient insulation to this kind of apartment so I can mix at home or just ANY related tips to help me in my situation?
I really don't know what to do