30 mins. metro+walk from Chamartin train station. We did not meet Clara but she was very responsive (in Spanish only!) and her cousin Luisa was waiting for us and helped us with everything. Luisa also speaks some English which was a great help. :) This place is not especially children-friendly (no travel bed or other facilities for kids nor kitchen table for dining) but we managed to stay one night with our toddler. It's great that one can use the kitchen and the washing machine. Clara's dog was very cute and kind. The only confusing thing was that the address of the place was not the same as in the location's profile which made us walk some hundred metres extra when arriving late in the evening.