The cottage is a small building located on the island in the middle of lake Peräjärvi. Inside is a sauna, a couch the player can sleep on, a functional handheld camera, the bucket used to brew kilju, a coffee pan used to brew coffee, a coffee cup, and a lantern that can be lit when it gets dark. A clock can also be found hanging on the wall next to the fireplace. It is also possible to save in the outhouse next to the cottage. Using the boat is the fastest way to get to the island, though swimming is also an option.
There is no running water on the island, so it is recommended to take some food and drink when going there. There is a fish trap on the porch of the cottage which can be used to catch fish for the player to eat. Caught fish can be cooked on the brick grill in front of the cottage.
To light the sauna, use the log pile at the right side of the building (facing the doors) to collect firewood. Place four cut pieces of firewood in the sauna's stove. The water bucket can be filled using the water in the lake.