Place is great for a couple of days in Madrid for 2-3 people with a cute decoration in an old but safe building :) It's in the center of the city with a walking distance to all touristic places (palace in 15-20 min, plaza mayor in 5 min, retiro park in 25 etc ) and also in between two metro stations and in 15 min walk from Atocha station.
Daniel was a great host who is always ready to help you, he gave us good tips about the city and also let us leave our stuff in the apartment on our last day up to 5pm :) (thanks again!)
Only thing that may be negative was the way from Atocha to house which contains people living in streets and a kinda poor neighborhood, especially if you arrive early in the morning it can freak you out like we did :D but the face of the city changes in the street of the house and over, so dont worry :)
I highly recommend this place if you're looking for a calm place for touristic visits :)