Olga's apartment is brand new in the inside, nicely decorated and very confortable, and has a little patio and a balcony where you can rest or have meals.
Even though the location is outside the historical center, you have many options (including the metro) to get there in about fifteen minutes. Beside, the neighborhood itself is quiet and nice, with excellent restaurants and a comercial area a few blocks away, and you will like it if you enjoy beholding the local life.
Last but no least, Olga and her brother, Alejandro, are very helpful and hospitable. They informed me about me to the most important spots in the city, provided me with a map, and gave me all the information I required.