We loved staying at this cabin and would definitely do so again. If you're looking to experience 'real Alaska', this is the place. It's inaccessible by road and you'll be isolated to an idyllic location on Resurrection Bay where you can have a beach day, kayak, paddleboard, or hike to a glacier, or just enjoy your patio view of the bay.
You should know: The hike to the cabin is not easy. It's very steep and through slipper terrain up a steep grade. Jeff placed ropes there that helped us out a ton, but we were commenting that a few of our guy friends back in Chicago would not have made that hike, and you have to make it every day to leave your cabin. So word would be: pack lightly, pack in a single backpack type of bag (you literally can't carry multiple bags on this hike), and wear good shoes. Bring your bug repellent. Know that there's plenty of firewood there and you can make clean water by boiling the rainwater collection system he's created, so you don't have to bring a TON.
The glacier hike is not marked super well towards the top, which we didn't mind. This was the 'wildest' Alaska hike we've been on since the trail really isn't there, it's just a suggestion of where to hike with a lot of roots and brush in the way. Our bear country hike method was to carry a portable speaker, and it worked wonderfully. The hike is advanced. There is a rock slide with medium/large boulders and you need to know where to step (and where not to). The top of the mountain is sort of a knife's edge view of the glacier, but we had lunch there and loved it.
The beach: Loved it! Great kayaks, too. I would highly recommend packing an inflatable beach lounge/sofa for yourself and whoever's in your party. These are cheap and we used ours since the beach is rocky and loved it. They doubled as 'rafts' in shallow water, too. If you're into trying out Alaska cannabis, this was a great place to experience it!
In summary, loved the place, plan to visit again, and is probably as close to 'real alaska' as you can get. I think the price of the cabin is probably somewhat tied to the publicity of the show for Building Alaska, but not a bad deal nonetheless. We've also rented dry cabins on Kenai Lake.