This was a terrible experience. I had a private room which cost more than a three-star hotel in Barcelona. I understand that in a hostel, they usually don't clean or replenish amenities everyday, they don't make the beds, but the minimum you expect is that someone will come and collect/empty the rubbish bins and change your towels if they are on the floor.
The soap dispenser in the shower was empty, so we had to use the soap dispenser from the vanity basin. When I asked for clean towels at reception, they called the cleaning team and confirmed yes. I didn't get them for another 5 hours.
The heating from the A/C didn't work at all, so we were also very cold during the nights.
I have stayed in hundreds of hostels worldwide over many years, so I know a thing or two. This was the worst experience.