We enjoyed our stay in the cabin, although it was an adventure to get to with a foot of snow on the ground!
It was a lovely place to stay, with lots of beds even though we were only a family of four staying. Having a pack n play/crib available for our 6 month old was fantastic, and our three year old loved having a whole double bed and bedroom to herself, and playing upstairs in the loft. Everything was well maintained and clean, and it was a great location to Gullfoss and Geysir, and to the Golden Circle attractions.
If coming in the winter and there is snow on the ground a 4x4 vehicle is highly recommended/required. We arrived the day after a big snow and the winds whipped enough snow around that we had to wait for the plow to come around the next morning before we could get out (even with a 4x4 Suzuki).
The owners were very nice and helpful when we were driving around in the dark trying to decipher the road names and signs, and were nice enough to be waiting at the cabin for us to arrive, even though we wound up taking 2 hours longer than anticipated due to a road closure from the blowing snow.
All in all we had a lovely stay and enjoyed our time at the cabin! It would be an absolutely perfect place for the summertime, and it was great for winter with beautiful views of the mountains and the northern lights (just with the caveat of being a bit adventurous to get to if its snowy!)