Had an enjoyable family (3 adults, 2 children) long weekend in this apartment which is located in the centre of Madrid.
Lisi booked us a taxi that picked us up from the airport, welcomed us at the apartment and gave us some useful tips on the area.
The apartment was clean and adequately equipped. There is a lovely bakery a minute walk away which is perfect for breakfast.
The only significant issue we faced was that the WiFi signal (clearly from another apartment in the block) was poor and consequently we could not use it in most areas. For this reason I would suggest the description should not mention WiFi.
Due to the mezzanine, the apartment is probably not suitable for very young children.
Overall we would recommend and stay again.