How about asking everyone to chip in to hire a cleaning person, so you are not the maid? And then speak up when you're feeling dissed. The more you allow it and sweep it aside, the more they will think everything's fine and acceptable to you. Another thing might be to have regular "house meetings" for all three of you to air this kind of stuff - perhaps every few weeks, or at least once a month? Don't let it fester.
Hot chick in the city.
Oh, oh, can't you see? Love is the drug for me.