Very well situated with Madrid easy to access on foot. Big flat with two double beds.
Margarita was welcoming and quick to reply or give advice. Felt comfortable.
The only two negative points would be the extremely slow Internet (2 to 3 minutes just to reach the Google search page and videos impossible to play) and the fairly noisy surroundings (neighbours and area with people a bit loud till 3 or 4 am in August).
Other than this, I would recommend the flat.