Just press the flush a few times or whack the water tank. Common problem with tanks in european households. If there is no water to flush, just fill a bucket, washbowl or pot with water and flush that way. Honestly, I stopped reading after this, seems like whining from someone without skills to deal with adulthood. Hey, maybe a lightbulb also burned out.
In the case where the terms of the living arrangement are “you can stay here 30 days for free, but you’ll need to take care of any issues you come upon yourself.”, this would be an appropriate response.
In this case, as mentioned in the article, they are “you can stay here for 30 days for $3,000”. Totally different story.
Does it make her opinion less important?
Things don't work as expected, and you simply pay up?
Not sure about you, but if I was staying at a place for a length of time i would expect things like the toilet work properly. As someone paying for a place to stay, "filing a bucket with water" to flush the toilet isn't something i should be doing. Toilets are not expensive and easy to replace, it sounds like this one should have been replaced some time ago.