We really enjoyed our time at Otilio's apartment! Communication and check in were smoothly handled, and the apartment was very nice. The terrace is the best part, great for breakfast and relaxing after a day out. The location is good, but does require a lot of walking to see Madrid. For us that was fine, we always walk a lot, but just be aware of that. The neighbourhood, while not exciting, is safe and mostly family oriented. There are number of restaurants and grocery stores nearby. Two metro stations are less than ten minutes walk, making access to the airport fairly easy (two transfers and 5 euro). The Atocha train station is pretty close, a 15 minute walk or short taxi ride.