Sample Map 1:40,000 scale island map of La Gomera designed for visitors using hire cars with special emphasis on roads, including Scenic Driving Routes and those narrow tarmacked lanes known as Camino Rural routes. Dirt roads are included but take care; your hire car insurance probably doesn't cover 'off tarmac' driving.
Place Name Index makes finding your destination a piece of cake, and the distance chart tells you how far between the main destinations. Road side bar/cafes with parking are shown along with petrol stations, information offices, mirador viewpoints, picnic areas, etc etc.
Large scale street plans of San Sebastian, Valle Gran Rey and Playa Santiago are on the reverse of the map, so you should have no problem finding where you are staying.