The treehouse is only 10 miles from the main entrance to Volcanoes National Parc - and the same distance from Kea-au (grocery, laundromat). It's a lovely small house, spacious for one person; I guess fine for two staying there - for the four of us living in the treehouse for more than a week a bit tight.
There is a nice table outside next to the car parking.
The night concert is dominated by the ubiquitous Puerto Rican coqui frogs, at daytime the traffic from Highway 11 is part of the background sound since the treehouse is in the first row of houses behind the Highway.