We can't understand how people describe this apartment good and comfortable for 5/6 people.
The apartment is very very small, approximately 35 m2, not suggested for more than 2/3 people (we were 5, and literally we weren't able to walk in there). For example the two bedrooms had space for the bed only, with no space for nothing else. Moreover if you want to eat in the house there isn't a dining table.
It wasn't clean too, with hairs in the bed and dirty blankets.
The location is not very bad, 15 minutes walking from the Palacio Real.
Anyway we do not absolutely recommend this apartment.