We loved the house! Plenty of space to sit and relax (although we were usually out and about) and the extra goodies (kayaks, snorkeling gear, boogie boards) were so great to have. Don't worry about bringing snorkel gear as there are about ten full sets.
As previous reviews suggested, the house is a bit out of the way (roughly an hour south of Kona and fifteen minutes down a winding road of switchbacks). This was not too big a deal for us since it's the Big Island and we knew we would be doing a lot of driving.
There are four beds in the house and a few additional sleeping spaces (a futon, air mattress, and sofa bed). We had 8 adults, and not all were couples, so it was a tad constricting. One was in the futon and another in the air mattress. Not too bad for the week we were there, but any additional time might have seemed cramped.
Cheryl is great at communication leading up to the trip. I had several questions and she usually responded within minutes.
Daniel, who watches over the house since Cheryl doesn't live in the area, is a treasure trove of information. He is very fun and loves to help with any planning.
Overall, I highly recommend the house. Just make sure it is the right fit for your size group and what you're wanting to do.