We stayed here for two nights so that we could do a glacier and ice cave hike, and a glacier lagoon boat trip at Jokulsarlon.
The guesthouse was in an amazing setting close to the mountains. The cabins were clean and very comfortable.
The included continental breakfast was excellent. It would have been nice if they'd offered a dinner option too, but the owner was able to recommend the restaurant at the nearby Hotel Smyrlabjorg. We ate there both nights and the food was amazing.
We were also lucky enough to see the northern lights both nights right from the porch outside our cabin.
I would definitely recommend staying here if your are visiting the Jokulsarlon lagoon or doing the ring road.