The apartment location is fantastic. Everywhere is reachable by walking.
The neighbourhood is quiet and friendly. Many many small cafes, restaurants, shops, supermarkets. Walking distance to major shopping district (700m)
The bathroom is awesome and romantic. Equip with both standing shower and bathtub. All toiletries are there.
Mariano is really thoughtful when I told him that that the bathroom is cold, immediately he told me that there is a portable heater that I can use.
Great host. Strongly recommend to stay with him when in Madrid.