Neither host nor visitor is served by putting up with a bad deal. Let your host know immediately when problems arise. Should this not be the case a swift ending of the stay gets the best results. That way both parties have a better experience. Feel free to give positive feedback too.
All projects go through bad phases and a few kind words can help a lot.
Don't underestimate your effect on your hosts. If you have any suggestions or criticisms of this article or would like to share any of your tips for visiting projects let us know.