I stayed 3 months at Marias place and it was a pleasure staying with her. She is absolutely welcoming and open-minded. She gave me tips for my trips on the weekend. The flat is perfectly located, very luminous, close to Nuevos Ministerios. The area is very quiet for Madrid (I got to know other areas and compared to these, Marias flat is totally quiet). When I got sick, she cared for me. (thank you for that!)
Maria offers two rooms. Unfortunately I got the smallest room, which is not explicitly mentioned in the advert here. The best would be to advertise the rooms seperated from each other here on airbnb, just to have it clearer.
Also the flat does not have an aircondition (although it is shown on the picture).