When you stay with others, there is no anonymity. Relationships can be frustrating because you can not get out of it. The benefits are that living in a small home will improve your relationship, at least in a connected way.
You must spend time together, no room to run away if you need space. If there are problems, you will have to fix them, because if you don’t get along you can’t live in one home of 165 square feet. You will have to do this.