Oh well, I was travelling to Ljubljana by car, and looked for a hotel with garage. Hotel Slon, reportedly, has it. But not only that it doesn't have a garage, it can't even be reached by car because the whole street in which hotel is located is under road works :-/ It took me 45 minutes of cruising around, asking locals how to reach Slon until a taxi driver told me I should leave my car in a public parking, and reach Slon on foot. It ain't a tragedy of course, but it's hardly what I was hoping for. I know it is not staff's fault that the road works are going on around Slon, but they should have informed me about it when I made the reservation.
WiFi was almost impossible to access.
The hotel seems to be situated near some club, loud music was playing all night long, I only managed to fall asleep thanks to sleeping pills I took.
The staff is extremely polite and helpful, at the reception, room service and in the restaurant. Breakfast is pretty good too.