We stayed at the studio for about 10 days in October.
The studio is in a quiet location with a beautiful view and easy access to a nice and almost private pebble beach.
It has everything you need for a short stay, including snorkeling gear which is very useful, and beach towels (but only two, so after 10 days you wish you had another one!).
The major inconvenients for us were the smell of humidity (probably because of the carpet on the floor - not a great idea in that kind of climate - and the lack of air conditioning), and the mosquitoes that prevented us from enjoying a little time outside. Because of that, we didn't spend as much time as we thought we would just relaxing at the studio. In the end, it still suited us fine since all we wanted was a quiet and private place to rest at night, after having spent the day exploring the spectacular landscapes of the Big Island!

That being said, even if we didn't find the studio to be perfect, Kristina on the other hand is absolutely great! She is a very welcoming host, has great knowledge of the Island, communicates very easily and quickly by mail, but mostly she is a nice person who cares about her guests. She helped us a lot when we got a rental car problem upon arrival (I believe she might have saved our trip with all the efforts she made to help us get a car!). We always felt welcome to knock on her door to get some advice, and she always took the time to give us all the information we needed and even more. Therefore I am really thankful for her!!! :)