This is a large apartment, that easily accommodated 6 of us (3 couples). It is very well located, within walking distance to many-many places in the center of Madrid. On the down side, it is old and the configuration is quite weird with a super-long corridor, and most windows facing the internal light wells rather than outside. However, it seems like a traditional architecture in Madrid. It is in the center, so it was quite noisy at night.