We had a really great stay at Juan Carlos and Nina's flat! The location is perfect with easy access to the metro and short walking distance to many great places to eat. We especially appreciated the welcome book with restaurant recommendations.... I think we visited almost all of them, and none disappointed :)
My only "heads up" is that this is a more of an open concept loft with sliding partitions between the rooms, so there's not a lot of acoustic separation. As two couples, this was a little inconvenient on a couple of occasions, but this place would be perfect for a single family.
Thanks again guys for a great stay!