Overall, the property is a great place to stay for a small group. The bathroom is good-sized for a cabin, the kitchen has everything you need, and there are three bedrooms. You're steps from the beach and a very short drive into Caseville. We had a few issues during our stay and the owners were very responsive to address them.
There are a few things that were not what I expected. The water has a very strong sulfur smell. We didn't even brush our teeth in it and the washer has a warning that the water might stain clothing. You can refill water jugs cheaply at the Caseville family market and I recommend stocking up. It's worse than other cottages I've stayed in there.
The internet is very slow. While there is some controversy over whether or not cottages should even have internet (my family has been arguing about it for decades), when it's advertised with internet I'd expect more than 3 to 4 MB. I knew I had a paper due and needed internet access, which is one reason I picked this property. Tethering to my husband's 5G phone (AT&T has good reception there, Google Fi does not) was faster. If you have to hop on a work conference call or your kids like to stream TikTok, it's not going to work for you. Consider bringing a wifi hotspot with you.
The biggest issue was the beds. You can feel the coils in the master bed and the one in the lake room (I didn't try the bunks). I ended up sleeping on the couch a lot. They're probably about due for a replacement.