The check in process was like a treasure hunt for us. Javi left instructions in English which I believe were auto translated, hence there are some confusions in the instructions, to find the lock & house key, and even to find which door of the house unit. The location is near to Madrid Puerta de Atocha station by walking distance, but if you're with luggage, it's better to take taxi as the area is hilly. The house is clean. The toilet is small but decent.