The apartment looks better than on the pics. We fully enjoyed it and we received great service from the host.
For business purposes, this seems like the best option for a stay in town - a spacious apartment next to the commercial center of Madrid, good connection to the airport and city center.
The apartment has AC, which was quite important as we stayed midst a heat wave.
Wi-Fi could be faster, which was important for us due to work, however it was a decent speed.
The host put a significant effort for us to enjoy our stay.