Beth's place is lovely. In a nice location a few km's out of the main town in Kona it was perfectly situated for us.
We were a family of 6 with adult kids; there was plenty of space for us all, with a nice sitting area on the deck out the back (with fly screens which was great to avoid mosquitos!), as well as a deck out the front which we ate dinner on on New Year's Eve!
A nice bonus was that you could see the rest of the suburb from the deck which gave us front row seats to all the fireworks people were setting off! A nice surprise!
Beth was situated on site but gave us privacy and was available for any questions we had! There were heaps of guide books and information in the house about the big island.
We did a day trip to the volcanoe (2hd drive each way), did a snorkeling tour at the captain cook monument (20min drive - it was awesome, would definitely recommend), went north to some nice beaches, and spent time relaxing at the house (as it was the end of our trip!).
The only thing to note is that there is construction going on that starts around 7:30am. Beth provided earplugs which was nice. Also no Aircon, but it was winter whilst we were there and although hot the fans were fine!
Would recommend this place to everyone, even better if you rent a car!
Happy holidays!