We had a great stay in Isabel's apartment! Isabel is very communicative and flexible as to check-in and out times. The apartment is great, clean and equipped with everything you might need. No airco so can get quite hot in summer, but that's the Madrid experience:). Location also perfect, quiet street, 5 minute walk to the heart of Malasaña, where I highly recommend to have dinner and drinks. 15 minute walk to the city center, and 5 minute walk to metro station taking you everywhere. Recommended!