The location of the flat was amazing! We were able to step out the door and walk to wonderful locations and sites in Madrid. Fernando provided us with a detailed email on transportation and great places to dine. Claudia met us at the flat and was very welcoming. She showed us around and was happy to answer any questions.
The flat is located on the 4th floor. I believe I was aware of this when I booked the reservations, however it was very difficult for us to get up and down with children in tow, so I would not recommend to someone unwilling to put a little huff and puff into it.
It is a great interior space, very funky and unique. I appreciated the eclectic and edgy design. To be honest, It could use a little love, touch up paint and a few more pieces of functional / comfortable furniture in the living room. We also had a unfortunate situation with a key that didn't work for the front door. We called Fernando and he sent Claudia over to help us in. They were very responsive and Claudia took the bum key with her, so hopefully that won't reoccur for future tenants.
All in all we had a nice stay in Madrid.