Ed (the owner) was a fantastic host. We had a great time in his trendy house on the south coast of Big Island.
My wife was concerned at first about staying in an eco-house where the electricity is provided by solar power but it wasn't an issue at all (Hawaii gets a lot of sunshine) - everything worked when we needed it to with no issues at all.
As for the house itself, it has everything you need with a well stocked kitchen, plenty of pillows/blankets/towels and all the other necessities. There's also a great lanai that wraps around the property, the back of which overlooks the coast and a jungle-like landscape - great for a morning coffee, where you'll share the lanai with geckos basking in the sun.
The house is 5 minutes away from Naalehu, the most southern town in the USA - where you'll find a great bakery that does excellent masaladas (guava, taro, coconut and lilikoi). A little further down the road you'll find Punaulu'u black sand beach, where we saw turtles every time we visited. Further still you'll get to Volanoes National Park where there's loads to see and do. The property is also a very scenic 90 minute drive away from either Kona or Hilo.
Ed was able to provide us with plenty of tips for the island and he was even kind enough to share some bison burgers he'd cooked on his grill (which the kids loved!).
All in all our family couldn't have asked for a better place to stay for our Big Island adventure.