My wife hiked through Embarcadero Marina Park North as a part of a longer hike to Chicano Park. You can see the entire log of that hike here - http://hikingtrailhead.com/Logs/ShowLog.aspx?LogID=182072. Embarcadero Marina Park North is a large, beautiful park beautifully situated near the water. Very nice spot and one my wife and I like to visit often since it is where we got engaged.