We enjoyed our stay at Piko Nani. The kitchen is beautiful and a joy to cook in, however it's not the most stocked of kitchens (pots/pans/etc) - though the basics were there. The bedrooms are huge, and having a bathroom for each bedroom, along with the powder room - was AWESOME. They also had snorkeling gear, etc. for us to use, and we were very grateful for that. Lots of tables to play games on inside and outside.
Check in/out was very easy.
The view (when you stand up outside or from inside the house) of the ocean is beautiful (note: you can't see the ocean from the pool). If you're looking to get away from the busier downtown area of Kona, then this would be a good option. You are up on a hill in a neighborhood, about 15 min drive from downtown. You're also about 15-20 from most food options. We didn't have the best rental car for the situation, it was a van and it didn't handle the hills + the rain very well. It rains up on those hills A LOT, so being there in June we weren't able to use the pool much, but the hot tub was great and heats up pretty quickly - loved that part!