I stayed at Celica Hostel in Ljubljana in May 2007 and can not help but warn people who are planning on staying there that it was VERY NOISY! Friday and Saturday nights were very noisy both in the bar area, hallway where the rooms are and especially outside. When I very nicely commented on the fact that I had not slept almost at all the second night the girl in the reception did not even say she was sorry. It seem as if her solodarity rather was with the young partying crowd outhside than with her guests who have payed to SLEEP.
The bar at Celica seems to be a popular place for people in the area to come to.
The building is very interesting I must add but if yuo want to rest go somewhere else! You can take the free tour of the building at 2 pm ewvery day thou - all the rooms are different and designed by artists.