I've had a lot of very good experiences with AirBnB, but the stay with Adan in Madrid was perhaps the best one I had thus far. Incredibly hospitable and generous, quick in his responses, and helpful with his advice (i.e. airport transfer, tourist attractions etc.). He even helped me out a lot with a foot injury that came up, so I could not be any more thankful. If I return to Madrid, there won't be any other places I will look for a stay, especially since the apartment and its location were perfect as well.