In reply to Gazlynn:
You can get the topo as a book from our local tourist information office in Plougasnou. Do bear in mind the tides, if you decide to climb on the island, the average tidal range is almost 8m and the currents are strong.
There's a bar at the beginning of the road and a crêperie a couple of doors down. The municipal camp site on the headland is expensive and somewhat exposed in bad weather, but the location is great.
Penhir is another place worth checking out.
Give me a shout if you want any more info.