It was great!
The apartment is really nice, fully furnished, clean and in an amazing location. You can easily sightsee all parts of Madrid in walking-distance.
I also would like to highlight, that the communication with Amaya was great. Latest after 30 minutes you can expect her reply answering all your questions - as we had some administrational questions.
We had an amazing stay in Madrid especially thanks to the great apartment, it really felt like a home away from home.
Thanks Amaya.