This cave house was fantastic! Many of the others I looked at were pretty small - just one room and a kitchen. The Author's Cave House was quite large with two completely separate rooms, each accommodating 3-4 people (two doubles, two singles). There was also a living room area and the porch so everyone could find a quiet corner to unwind. The porch itself deserves special mention. It sits at the perfect location with a completely unobstructed view in all directions, looking out on the Caldera. While countless tourists came to the area to snap their pictures and go back to a lesser location, we had all the time in the world to take it all in. Pictures don't do the experience justice. The location was also perfect so we could get to all other parts of the island fairly easily in our rental. Parking was a bit challenging at times, but if you're creative in what you consider a parking space, then you're never more than a few minutes walk from the house.
Aside from the location and the spaciousness, the house was very comfortable with A/C units, plenty of windows to allow a nice breeze, lots of lighting, and outlets (with adapters). The bathroom and especially the shower are quite small, but I don't think this can be helped and it's probably the standard for the area. The kitchen was also very small (leaving more room for the living spaces), but still has all the essentials.
All in all, the location, the view, and the comfort made this an unforgettable experience.