I went to Madrid with 5 friends for a long weekend. The flat was immaculate, exactly as described, very confortable (each of us had her own bedroom with bathroom), very well located and linked to main metro lines.
We walk to EL Prado, Plaza Mayor, the Palace etc.. always a 15 to 20 min walks.. there are several restaurants in the area with plenty of options.
Helena was great! Super helpful and very flexible!! Definitely a place to book again!