I could work with it if I was forced to do it, which I was for a few months. If I had to do it for an even longer period, a separate room would probably be necessary. But having a "black space" room is not exactly something I want in my private space either. (Not to think about my work most likely not willing to pay rent for that room :D )

I know this is a personal preference, but for me, physical distance makes my work more productive and my private time more relaxing.