Great hostel in a central location of Madrid close to all the key sites you would want to visit. There are plenty of options to get around via bus, metro, or train. The hostel is very well maintained by staff who are always on hand to assist and provide recommendations.
The rooms are smaller than they seem in the photos, but you get a locker plenty large enough for a carry-on suitcase and each bed has a light and charging socket. The beds are comfy and good in size and well secured so they don't make too much noise when people move.
I would recommend this place if you are looking to explore Madrid on a budget