We stayed in tiny house for 8 days and we had great time there. But you definitely need a car for all the time, as it´s a bit out of everyhting, in the middle of rain forest. There is also gravel road in last approx. 3km, so we appreciated our jeep. The location is definitely good for visiting Volcano National Park.
The house itself is tiny, as written, but it´s cute and you will find there everything you need for your stay. There is also snorkeling gear and small swim boards, we enjoyed all of it.
Jen and her husband are very helpful, they provided us filtered drinking water and also clean towels each few days. In the night there was a bit chilly inside, but we were there in December and there are blankets there are warm. Generally I think for that price it´s really worth it.