"The cabin was mostly as expected: nice, secluded, with all the necessary amenities, clean and safe. Fireplace and sauna are awesome. Plus the starry skies or the Auroras on every clear night. During the stay the owners responded to emails within a few hours or less.
That being said, some details in the description seem outdated. It claimed no neighbors within 1 km, but there are definitely people living about 600 meters away, there are (apparently empty) houses about 400 meters away, and there is a new villa for rent just 50 meters away from the cottage (it wasn't occupied during my stay, but people drove by to and from it several times). Lake Jerisjarvi is indeed 300 m away, but good luck getting to it - it's all private land or bogs (or both). The surrounding forest is full of bogs too. The cottage is not as roomy as it might seem. I was alone and still sometimes felt a bit out of space to put my stuff in. For 5 people (maximum occupancy) it may be a bit too cramped. And there is no good place for computer work.
Also, there were some maintenance issues. Wi-fi was slow and unstable, sometimes disappearing completely. Twice I asked the owner to reboot the router and it helped for a bit. Eventually I gave up and switched to my mobile Internet. The toilet kept getting stuck after a flush and wouldn't refill without a kick. Water kept getting too cold or too hot even if you didn't touch the valves. And on the checkout day the power went out.
Despite all that I had a good time."