Guillermo is one of the best host I’ve dealt with on Airbnb. First, he sent me very detailed instructions about the self check-in which was great. He was very fast to respond to any of my messages.
Second, the apartment was perfect for our stay: the most central, the fact that there are two bathrooms was so convenient as I travelled with a friend and we both had our own space. Bed and pillows were comfortable. Kitchen/appliances are limited but perfect for basic needs. We did not eat in ever so it didn’t bother us. I would absolutely recommend and would stay there again for my next Madrid vacations.