I was born and raised in Hawaii, and I stayed at this place with my husband and 17-month-old son, so this review is coming from that perspective.

Pros :
-house is well-situated if you want to stay out of the touristy downtown area
-the parking situation was good
-Walmart and mini-mart super close
-the washing machine is very quick and Phil provides laundry soap (unlike other places where you have to provide your own, or so I've read)
-I didn't see a single bug INSIDE the house, and personally saw no cockroaches outside. That was a pleasant surprise.
-super close to the beach (including a nice, safe beach for small children)
-Phil is very accommodating and basically provided us with everything that we needed (surfboard, fan, stepstool for the bathroom, etc.).

Cons :
-the floor gets super dirty very quickly because of the wind blowing the red dirt in through the windows (we swept at least once a day and our feet were still gross....definitely bring a pair of house slippers)
-the shower is incredibly small and not suitable for young children (my son couldn't tolerate the sting of the showerhead, but we had no other option as there is no tub)
-the bathroom in general doesn't dry out very well so we had to hang the bathmats and towels out on the line quite often
-there were a lot of small things left behind by other people or perhaps by the owners of the house themselves that posed hazards to young children (wheels from rolling chairs or bits of metal under the stairs/under the bed)
-there is not really a backyard to play in because the ground is either covered in big gravel or red dirt
-the "kitchen" really wasn't more than a glorified hotel room style kitchen...the freezer was pretty much useless for freezing things like water for taking to the beach or swap meet, and juice bottles or milk cartons don't fit standing up unless you remove a shelf
-the walls are so thin you can hear everything. I felt bad for our neighbors when I had to use the bathroom in the middle of the night (super loud fan) and when my child was crying.
-another house has yappy dogs that love to bark in the evening.

All in all, it was a good experience. I think that if I didn't have a small child some of those "cons" wouldn't have even registered. I'm grateful that Phil allows children to stay there, so many places don't. I would probably consider staying there again for a future trip.