Overall we enjoyed our stay. Only a few problems such as internet connection being very weak on our floor (3rd) and check in problems - we sat outside for an hour then got a message saying they would be out until 5pm (we arrived at 2:45pm) despite us messaging the night before telling them our arrival time. Once we got in though Charlie was very nice and helpful and the hostel-style apartment was set out well with a good sized shared kitchen, rooms and bathrooms. The highlight was the location - plenty of food places, supermarkets, metros and shopping places surrounding it - 2 min walk from the lovely Gran Via!!