David and Sergio's place was lovely - it was a perfect central spot to remain in while visiting Madrid, with 2 super close subway stations a 5 min walk from the apartment. The place was very clean, modern, and had the benefit of having 2 bathrooms with showers. One minor complaint is that the shower water turned from hot to cold very quickly - my family took quick showers, and found that only one person could enjoy warm water. Otherwise, the beds were comfortable and nicely decorated. Parking was easily accessible. We would definitely return if we were to visit Madrid again.