We stayed here for a week The positives are great communication from Pedro, kept us updated about various recommendations, location of the flat, options to get there from the airport. He wasnt able to meet us in person but sent a friend and helped the communication of that. The place is spotless and for 2 people. It is small upstairs but the bedroom is big. It has an iron and electric kettle and as everyone knows you can only make a British cuppa properly with boiling water from a kettle! It has a hairdryer. These are key items to us. Also a washing machine.
The kitchen was adequate to our needs, fridge and a hob. There is an electric hob but we didnt use it as we didnt eat in. At all. You cant move for bars and restaurants, literally on the doorstep. It is noisy with Madrid revellers but I liked that we were in the thick of it. Its walkable to virtually everything but tubes are nearby.
My only gripe is that the sofa and bed were not comfortable or supportive for our backs.