Best kid friendly parks in Hayes Valley, San Francisco?

The best kid friendly park in Hayes Valley, San Francisco is probably Hayes Valley Playground. But if that is not enough park for you, there is always Duboce Park a little to the south (a great dog friendly park too) and Beuna Vista Park just to west. (Of course, if you are willing to make a bit more of a trek, there is also the wonders of Golden Gate Park.