We stayed for 2 nights. The photos are accurate and the internal of the apartment is great and exactly as described. The location is also in the centre of the old town and very near the Prado etc. The two bedrooms are clean and the beds are very comfortable. At night it is very quiet and peaceful and there is also a security porter downstairs.
However the whole interior of the building is being refurbished so the landing and stairs are covered in some dust. In addition the apartment is on the third floor and there is no lift. External entrance to the apartment looks rough with some graffiti on nearby walls but the area felt safe.