Maribel's AirBnB is the best I have ever stayed at, both logistically and in human warmth.
Her place has an excellent location: a quiet residential neighbourhood, yet only 3 blocks from Teatro Cervantes or a 3 minute walk to downtown.
She is a wonderfully warm and welcoming person, offering fruit, tea or coffee, and anything one may need. She even made home-cooked Paella for me!!
Maribel goes out of her way to be home and available if needed, loves her city & provides good information, and is exceptionally generous in sharing not only her living-room, but also the kitchen and fridge, in addition to the usually required spaces.
In fact, her guests can have the living-room to themselves, as it is right outside the 2 rented-out rooms. She will retreat to her room and leave the space and tv for you, if you so wish.
Some of the previous comments written by guests can be confusing, because she rents out 2 rooms. The one I stayed in has 2 beds, was very comfortable and spacious. The second one has a large double bed, which makes it look smaller, but doubtless will be preferred by couples.
And, the neighbourhood is very safe. I walked home very late every night, along streets that may seem dark and lonely after the life and lights of downtown, but despite being a single woman, never felt any risk whatsoever.