The airbnb of Walter was very very nice. I came much earlier than the ckeck-in time had said but it was no problem and I had a very nice check-in, good and easy understandable explanations of how everything in the apartment works and I even got tips and maps for traveling around in Madrid due to the fact that it was my first time there. The whole apartment was very clean, I felt comfy all the time and surely I would always come back if I had the opportunity. Thx a lot Walter :)