My stay in Diego's apatment was really good. He has 2 lovely dogs that don't bother you at all. The beds are comfy. Diego is helpful, so if you need any info about Madrid he will help you. The apartment location is pretty good, close to the bus stop that has a direct connection to the center, and 5mins away from the metro station.
We arrived early to Madrid and had no place to put our luggage, Diego was too helpful, we made early check in.
So if you have a short stay in Madrid, that's a good place stay with perfect value.