Staying in Maria's place is like coming to home, she and her husband and aunt are extremely friendly and kind to me, even though we don't speak much of each others' language. I had a great stay and if there's a next trip to madrid, I will undoubtedly stay here again. If you are concern about the location, it is around 2 minute walk from the nearest bus station which takes you to atocha and museums. For the metro, it is around 10 minute walking uphill.