Yep. I lived in a 35m² apartment where bedroom, office, living and dining room were one room because there was no space to separate them. Kitchen was in a separate, small room, but had no door, so technically it was all one room. There was just not enough space to add walls. However, knocking down every wall possible to join your bedroom with the rest... No. In that case, I'd at least place a divider of some sort.