Carmen's place is on the 3rd floor of a tightly-secure (triple-locked) modern (elevator running) building across from the Santa Justa train station. Because of my poor sense of direction and the hot sun, It took me about 24 minutes to walk to the history center, which I wished to be shorter . That said, the bus from/to the train station is frequent and a short ride costs only 1.4 euro. A good supermarket is on the same street, within 3 minutes. The apartment has two rooms and a shared bath, all very clean and nicely decorated. Carmen is a very caring hostess, who got up as early as 5am to open the place and hold my bags for me! I only wished the kitchen (microwave) had been available all the time instead of for a very short period when she happened to be in the apartment. When traveling I often make tea/coffee and snacks to save money. If you don't have such needs, Carmen's place would be perfect.