Host did not disclose that the toilet on the boat was intentionally disabled(taped shut). Saying that there are bathrooms and showers nearby is not the same as disclosing that the toilet on the boat is unusable. No one expects there to be a shower or full bathroom on a small boat, so mentioning showers and bathrooms close by is a good feature. However, a toilet is not a bathroom, it is just a toilet. Since the boat has a toilet, it is reasonable to expect it to do what a toilet does unless told otherwise. Just like I would expect the boat to stay afloat without having to proactively confirm that. With no toilet, if my wife needed to use the toilet at 3 or 4 in the morning, then she would have to dismantle the boat door, climb out of the boat, walk the whole dock, go through a locked gate, cross a parking lot road and enter a locked area in a separate building to do so, all in an area that does not feel safe to us.