Ja, die Straße 711 ist unbefestigt und voller Schlaglöcher. Jedoch mit einem normalen PKW durchaus machbar.

Yes. Your can make it up there in the van. It is narrow but there are sections where you can merge off to the right to let traffic pass.

I visited this in late November this past year and arrived right at sunrise. It was perfect since it was a clear day and allowed us to get some great pictures with the mountains in the background. I suggest going on the walking trail that leads to Osar Beach (10-15 min) with the black sand, which was neat because there was a lot of wildlife sea lions, birds, and great shots of Hvitserkur.

goo.gl/maps/v5r7jDGkezr