Carlos was there to meet us when we arrived at the apartment. He is a very friendly guy and provide us with a lot of information about the apartment and surrounding areas such as walking distances to supermarkets and tourist attractions.
We stayed at the studio apartment for 5 days and on one occassion, one of the light in the room failed. We sms him and he promptly arranged for the bulb to be replaced on the same day.
The apartment is very clean and tidy. Fridge, cooker, cutlery, pots and pans are provided, so one can make breakfasts or light meals.
Most of the major tourist sights in Madrid are within walking distance so you don't need to use the metro very often.
Would recommend this apartment to anyone who want to stay close to the city centre.