The apartment is astonishing: clean, bright, spacious, well equipped, very confortable. But what makes it really special is Maria's personal touch: beautiful decorations, charming furniture, fancy lighting, nice accessories and, last but not least, a lot of plants. This is what 99% of airbnb apartments doesn't have and reminds me a beginning of the airbnb when apartments were shared by people not by companies.
The patio is superb: huge and cosy. Unfortunately I couldn't use it too much, February in Madrid is just a bit too cold for me. However, I imagine that in summer is perfect to have a breakfast or sip a wine on evening.
Location is not very central - it takes about 30 minutes walking to the Plaza Mayor. But the metro station is just few minutes away. Everything essential is close, including impressive El Matadero (recommended by Maria).
Maria is very nice, easy to communicate, she takes care on the apartment. We spent there 2 nights but I wish we could stay much longer.