Seattle mom says Green Lake bathrooms are reserved for the homeless Green Lake Community Center. (Seattle Parks Dept photo) A Seattle mom says she was stopped from using the public bathroom at Green Lake because it is reserved for the homeless. While playing at the park with her 18-month-old daughter, Kristen went to use the restroom, but found that they were blocked off with tape. When she asked at the community center what was going on, she was told by a staffer that the bathrooms were reserved for the homeless, and that she needed to use a port-a-potty instead of the public restrooms.