Angel's Nest was a great stay. My wife and I stayed for 2 nights. The place is a bit secluded from the Hilo city but that is the USP of it. It is in the midst of nature, very close to the beautiful eastern coastline of Big Island and close to the newest land formed on earth (from fresh lava from the volcano).
Angel was a great host. She was up till late because we got delayed and then helped us set up and feel comfortable. Despite being in the midst of nature, the room was very clean and bug free. The room is a bit small so if you are someone who needs a lot of space then it might be a bit uncomfortable. Angel also baked fresh muffins and gave us tropical fruits which were delicious although we could not finish all of them.
All in all it is a wonderful place, especially if you want a relaxed, private vacation in the midst of nature.