Check in was not at all easy or pleasant. Instructions were not particularly clear and a critical door was locked and no one was there to provide access. The flat itself is quite nice. Clean and modern and the bed was good. The neighborhood is not the best but the building is good. The windows are modern and provide reasonable sound proofing but Madrid is a big city and can be noisy wherever you are.
We visit Madrid regularly and will probably not use MadFlats (Daniel) or stay in this flat again.