I travel a lot, and overall this was one of my best stays ever. We had two rooms and both were impeccable. I value sleeping and comfort over most things, and this was one of the quietest hotels I've been to despite being almost full. Special props for the great breakfast with endless options and the lovely people at reception.
This is a very deserved 10/10 review. The only thing they could improve (and this is very minor) was the illogically working aircon. We had issues in both rooms (it kept going on and on again despite turning it off, and couldn't keep pace with the target number). This didn't really bother us though, and the temperature stayed around 20c-24c the whole time.
If I return to Ljubljana, I will for sure book this hotel again.