This is a great location inside the lava watching area, by which you may actually have some privilege (you can drive inside and saving some walk/bike). Matt and Lauren are amazing and you will learn that they are probably more prepared than you for your expected trip: headlight with full-charged battery, poncho and even first-aid kit. As first-time visitor, we soon learned how useful the headlight was when hiking in the dark (very rough field). We also followed their instruction by buying food beforehand (later everything is closed nearby, so dining after the trip is actually very hard).
The room itself is very good too: clean and cozy. And I can see that the hosting are still in the progress of adding more stuff. If we had more time, we would have been very happy to stay longer.