Overall is a good hostel, many spaces, different areas, good kitchen, friendly staff, so i rate 5 stars that.
Unfortunately, the beds are TERRIBLE. Seriously, how do you put an aluminum plate under every mattress?that sounds so loud at a minimum movements making impossible to sleep. The floor is very noisy too, so basically you won't be able to sleep. The upper bunks don't have fence so you could easily fall from bed.
Lockers are good, toilets were overall clean but no soap.
Please get rid of those beds and your hostel will become the best in Santiago