We loved the apartment and do recommend it highly.
Ricardo was really helpful, gave us loads of tips and did arrange somewhere for us to leave our bags as we were leaving late. He was available to help at all times.
We felt really welcomed and enjoyed the basket of fruit!

The flat is clean, quiet with great amenities (expresso machine, dishwasher and laundry tabs, etc.).
It is located perfectly: you can walk to nearly everywhere (we only took the metro to go the Atocha station) and the supermarket is next door.