We'd recommend this flat to anyone. Before we arrived, Mercedes was very helpful in answering our questions and making adjustments to our reservation. She met us at the flat, and gave us a tour, and showed us how everything worked. She arranged a return taxi for us as well. The flat is in the perfect location in the city, a short walk from just about everywhere. It's just far enough away from Plaza Mayor that you don't hear a lot of noise, but it is still an urban flat, so you do hear some of the neighbors from time to time but it's much less than you'd expect. The flat is itself is much bigger than we expected from the photos, and obviously very nicely furnished. Mercedes and her brother clearly put thought and attention into the decor, furniture, dishes, etc. and even left a bottle of wine and ice in the freezer. Some notes on details: There's wifi that reaches into the main rooms but not the back bedrooms, two sets of keys, a hairdryer, and other amenities like towels, basic toiletries, etc. The kitchen is well equipped. There is air conditioning in the main room, and a portable AC in the main bedroom. There's a washer, but not a dryer. The flat is on the second floor (called the 1st floor), and there is an elevator but you would still need to walk up a half staircase.