We, me and my partner, stayed in Hostal Providencia for four nights in a private room with shared bathrooms. Although at the time there were protest relatively close to the hostel, we did find it was a very good location (and safe, if that matters) to explore Santiago. We really liked the staff, always fun and ready to help. They also encourage to have fun, which we greatly appreciated. They also helped us practice Spanish, thank you :).
One could say it is noisy at night, yet we found it within a descent amount of noisiness: it seems like the hostal can combine a bit of partying with a bit of relaxing. Breakfast is awesome for hungry Belgians. A point that could be improved is the organisation of the kitchen, we found it a bit small for the amount of guests.