The apartment was enough space for our family of 5! according to Europe standard. The company that manages this property are very good hosts and organized. They can arrange your pick up at the airport or train station, so you don’t have to worry about it.
The host is present for your check in an explains everything about the apartment and some local tips.
The location is amazing to explore “real” Madrid. Very close to the metro station, Puerta del Sol, museums, parks, etc. Also awesome restaurants and night live around the apartment, specially Cava Baja street. I can also recommend it with kids.