Everything was amazing during our stay at u hostels in Madrid. We stayed there twice! Once before we went to Portugal and then again afterwards. Kitchen could be better equip and cleaner, however everything else was perfect.
Very social hostel, my friend and I met some really cool people through the hostel. The only bad thing was our room which was on the 1st floor, had hardly any circulation, was very hot and dark throughout the day and the window looked straight into the men's toilets. Otherwise was a great experience.