Looks like you were successful in changing her plans. Housekeepers encounter people in their rooms all the time, some are working at their desk, reading a book or just chilling. There is no harassment going on. If one acts properly, let them clean, get out of their way when necessary and, in this case, maybe a tip for doing a good job would be in order. You usually get accused of sexual harassment when it is close to that or worse, not for sitting in your hotel room while someone is there. I agree, go out to your car, take a drive, maybe a drive through for something to eat or drink, a walk in the park. However, for those first timers, even getting out of the room is a major milestone and their fear needs needs to be respected by us more experienced people here.