The apartment was great! The only downside was the high level of street noise until 2-4 am depending on the night. It is within walking distance to a lot of great food places and other destinations, and is easy access from Atocha station (drop off from the airport) and to the metro. 4th floor for Americans means 5th floor just as a heads up! Definitely doable, and gets you into shape for walking the city. Apartment was very clean, bathroom spacious for European standards and there is air conditioning available if needed. We went to a few standout restaurants, including El Sur(shrimp risotto was amazing), taperia El Rincon de Cabo (get the steak tartare) and casa revuelta (fried cod tapas, speak Spanish only, need to pay in cash no card). Make reservations to go to the Botin restaurant (oldest one in the world) a week or more out! I would consider this location again if we come back to Madrid in the future.