I’ve been invited to stay over at the house of a friendly acquaintance I don’t really know outside of a group that meets online. I wouldn’t dream that her home would be in the state you described with cat feces on the floor. I wouldn’t put blame on myself for assuming it is safe to stay over with a friend who extended a warm invitation. But seeing as this happened, it is wise to opt for a hotel in the future. It’s a shame because the vast majority of people would have had an acceptable home and polite behavior. You couldn’t have predicted this with this woman.