|Vila Planinka Hotel by Andrej Mohar is licensed under|
a Creative Commons Attribution 4.0 International License.
And here is a map of light emissions in the area where it is located, you can see that it is nestled in a "dark island":
|Light emissions near Jezersko, from the Radiance Light Trends webapp|
According to Andrej, the surrounding mountains block out light pollution towards the horizon, so the view is stunning.
If you look at the hotel website, you'll see that one of their photos shows a telescope in the room. I'm not sure if that is included generally or not, but it shows that the hotel is sees a view of the stars as one of the attractions of their location.
I have stayed in a number of hotels where the balcony had a light on all night, or the facade is floodlit, and I find it really unpleasant. It's great to see that some hotels are realizing that there is value in letting guests enjoy the dark!