This place is magical. Absolutely love it here. But the cabin is very bare bones. Do not expect much. Read this review for an idea on what you need to bring.
-There is running water but I read online it wasn't potable. So I recommend bringing a water jug and filling it at Tropic Reservoir Campground. Or boil the water.
-There are no sheets or pillows so you should bring a sleeping bag and pillow.
-There is a outhouse with toilet paper. But it's always good to bring your own.
-collecting firewood is prohibited here. So buy some before arriving.
-you will get a code when you reserve the cabin that unlocks it.
-it is a fairly long dirt road in. We did it in 2 Toyota Prius's. So I'm sure almost any case could do it. But AWD/4WD would be useful.
Read the steps and follow the things I listed above and you should have a great time