My wife and I enjoyed that this house is very close to Reykiavik, yet you feel like you are in a more rural setting due to its location next to the nature reserve. We had great car access to the Golden Circle, Southern Coast, and areas farther west (including Snaefellsnes) for a little more of a drive. The house is close to local restaurants so we got to enjoy some great Icelandic food at reasonable prices.
The nature reserve is filled with hiking/biking paths so you can continue your enjoyment of the natural beauty this area has to offer without driving anywhere. Also, we got lucky two nights in a row, and saw the northern lights from the house. It's location really limits light pollution.
The outdoor shower and hot tub are great features. I didn't think the outdoor shower would be a thing, but I agree with prior reviewers that the hot shower mixed with colder temps is quite refreshing.
If we could change one thing, we would suggest that the owner charge a cleaning fee and have the unit cleaned by a third party instead of having the renters do it. We spent a portion of our last day cleaning instead of touring, and would have been happy to pay so we could have the time vacationing.