Rebeca's place is in the San Blas district, outside the city center but within easy walking distance from stations to two metro lines that get you downtown fast. Her place is on the 4th floor of a walkup, but she kindly helped me carry my bags up. Rebeca, her son Diego and her friend Carolina are all delightful people, friendly and very helpful. Rebeca's a great hostess, one of my best Airbnb experiences.