Elisa's flat is a convenient, well equipped duplex flat. We stayed there with our three kids (age 1, 5 and 9) for 5 nights. The flat is not huge, but it's welcoming and well conceived. It is a former commercial space converted into a duplex, located on the ground floor of a narrow street. There is natural light but on a rainy day you'll have to turn on the light. All the windows face the street, and when neighbors enter the building the building door tends to slam shut. If you are a light sleeper this flat might not be a perfect match.
Elisa arranged for us to get the keys really easily, and the flat was spotlessly clean when we arrived. There is a LIDL 100m away for all you might need, and the flat is conveniently located close to the subway stations Diego de Leon and Avenida de America.
The flat suited our purpose perfectly and the value/money was perfect.