We absolutely loved staying at this place. It is not a resort, and that's what we liked about it. We could walk to local haunts (and tourist ones), and we were close enough to the resorts to catch tours of the island when we wanted. A rental car is necessary if you want to reach the resort area, Volcano National Park, or other popular areas of the island (like Kona). There is intermittent bus transit, but we had a hard time finding schedules and rates.
We loved the room - it is a converted store front where the street-facing front room has been turned into a sitting room with good privacy curtains. The main room is light and airy, with a fairly hard futon-like bed to sleep on. I loved the firm mattress, my husband wanted something a little softer. There is an indoor bathroom and an outdoor shower. I was a little worried about the outdoor shower, but it turns out to be amazing (and way more private than I imagined)! There is also a small fountain/pond attached to the shower room, which offers a quiet, soothing white noise. The room opens to a back courtyard shared by Megan and possibly another AirBnB. The courtyard opens to the street with an unlocked, but hardy looking gate.
We also loved the area of town we were in - a delicious bar across the street, several fancy local chocolate shops nearby, a local ice cream place (with vegan options!), a dive Thai restaurant that tastes a million times better than the place looks, and the harbor right down the street. While people can swim in the harbor nearby and the sand is beautiful and black, it seems like it is not a popular spot for swimming. More often you will see people fishing, kayaking, or running on the beach. The popular swimming holes are a couple of miles down the street (the locals implied that they don't trust that the harbor water is very clean, and I believe them - there seems to be a shipping lane nearby).
Megan was kind and friendly. She didn't bother us in our room, but also went out of her way to make sure that we felt welcome. The French press and local Hawaiian coffee delivery on the first morning was a sweet touch. I think she owns the whole line of storefronts on the street, and was often around working on fixing up the building if we needed her.
If we ever can afford another fancy Hawaiian vacation, we will definitely be back!