Shanna's place was everything she described and much more. It's important to read what she tells you about the place before you come.
For us it was 3 weeks of heaven among her two acres' of tropical fruit trees and colourful exotic plants of every shape and size. Apart from lots of fruit such as avocado (the tree rains avocados right onto your roof and next to your house!), papaya, bananas, coconuts or whatever is ripe at the time you'll be there, Shanna will share with you lots and lots of information about the tidal pools, beaches and all the lovely places around her place, so I won't mention them here, but can confirm that they are all definitely worth a visit, especially if you like to swim and snorkel.
Not far from her place are the beaches around Hilo that you should also visit if you're into swimming.
It rained quite a lot while we were there but that did not worry us as it was warm and we brought umbrellas, and learnt in the course of time where to escape to when we've had enough rain. The best place to go to if it's raining in Puna is Punaluu and Kawa beaches down south. The weather there is better and these beaches were our favourites. But if you have time you can also go to the west side, to the amazing surf beaches around Kona where it practically never rains.
We spent a lot of time walking as well and there are plenty of trails to explore, including trails in the Volcano National Park area, the water falls or the beautiful Waipio Valley near Waimea. We also enjoyed very much walking along the beautiful roads around Shanna's garden. There's everything around her place and it's possible to have a wonderful holiday just exploring the surrounding area if it's not raining too much.