We loved our stay here! We would definitely rent again from Daniel. We did not meet Daniel but dealt with several of his associates at his apartment management group, Madflats Collection, and they were all very professional and helpful. As other reviewers have said, this place is relatively quiet for such a busy street because the bedrooms are in the back, away from the street. You can explore Barrio de las Letras right outside your door, or hop on the Metro, one block away, to go anywhere in Madrid. I think this place is great for two to four people. It might be tight for five or six people. It was very clean and comfortable and had everything we needed. Thank you for a great visit to Madrid!