We had nice two nights in this place — but probably wouldn’t have stayed much longer. It is a great place to stay for the night and use the beautiful sauna (such a lovely bathroom!!!) which is what we did, but it gets a little uncomfortable too long without any daylight (there is NONE at all).
It IS (as others noted too) necessary to keep the front door open a lot of the time to have enough fresh air, but for us it was fine.
The place is really nicely decorated and furnished, we loved the sauna and the bathroom especially, there you also don’t miss the light so much.
Would recommend!